Metals and Non-metals
260 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following is an exception to the general physical property of metals being solid at room temperature?

  • Mercury (correct)
  • Aluminum
  • Iron
  • Copper

A material is described as brittle and a poor conductor of electricity. Which of the following is it most likely?

  • Metal
  • Alloy
  • Metallic Compound
  • Non-metal (correct)

What type of ion do metals typically form when they undergo a chemical reaction?

  • Covalent compound
  • Positive ion (correct)
  • Neutral atom
  • Negative ion

Which of the following best describes the nature of oxides formed by non-metals?

<p>Acidic (B)</p> Signup and view all the answers

Which of the following metals will NOT react with water or steam?

<p>Gold (C)</p> Signup and view all the answers

Which metal reacts violently with cold water, and the evolved hydrogen immediately catches fire?

<p>Sodium (D)</p> Signup and view all the answers

What type of compound is formed through the transfer of electrons from a metal to a non-metal?

<p>Ionic compound (C)</p> Signup and view all the answers

What is a key difference between alloys and compounds?

<p>Alloys do not have a fixed ratio of elements, while compounds do. (A)</p> Signup and view all the answers

In the formation of calcium chloride ($CaCl_2$), how many electrons does each chlorine atom gain?

<p>1 (A)</p> Signup and view all the answers

Which of the following metals does NOT react with either cold or hot water?

<p>Iron (C)</p> Signup and view all the answers

What property of metals makes them suitable for drawing into wires?

<p>Ductility (B)</p> Signup and view all the answers

What is the chemical nature of corrosion?

<p>Electrochemical oxidation (D)</p> Signup and view all the answers

Consider two unknown elements, X and Y. Element X readily loses electrons to form a stable compound, while element Y readily gains electrons. Based on this information, which statement is most likely true?

<p>X is a metal, and Y is a non-metal. (D)</p> Signup and view all the answers

Which of the following best describes the anodic site in the corrosion process?

<p>The location where metal atoms lose electrons and dissolve. (C)</p> Signup and view all the answers

A chemist is investigating the reaction of a newly discovered element 'Q' with various reagents. They observe that 'Q' dissolves in mineral acids, producing a salt and liberating a flammable gas. Furthermore, the oxide of 'Q' reacts with water to form a solution with a pH greater than 7. Based on these observations, which of the following classifications is most consistent with the properties of element 'Q'?

<p>A transition metal forming basic oxides (B)</p> Signup and view all the answers

During the propagation stage of corrosion, what do metal ions typically combine with in the environment?

<p>Oxygen or water (C)</p> Signup and view all the answers

What primarily occurs at the cathodic site during corrosion?

<p>Electron gain (B)</p> Signup and view all the answers

What is the ultimate outcome of the termination stage of corrosion?

<p>All the metal is consumed, or the environment changes to prevent further reactions. (D)</p> Signup and view all the answers

Consider a scenario where iron is corroding in a humid environment. Which of the following reactions is most likely to occur at the anodic site?

<p>$Fe \rightarrow Fe^{2+} + 2e^-$ (B)</p> Signup and view all the answers

An engineer is designing a marine structure using a combination of metals. To minimize corrosion, which strategy would be most effective?

<p>Ensuring all metal components have similar standard electrode potentials and isolating dissimilar metals electrically. (D)</p> Signup and view all the answers

Which characteristic is NOT typically associated with ionic compounds?

<p>Low electrical conductivity in the molten state (B)</p> Signup and view all the answers

What is the primary force holding ions together in an ionic compound?

<p>Electrostatic forces (B)</p> Signup and view all the answers

Why do ionic compounds conduct electricity when dissolved in water?

<p>Ions become free to move and carry charge. (B)</p> Signup and view all the answers

Which statement accurately describes the arrangement of charges within an ionic compound?

<p>The total magnitude of positive charge must equal the total magnitude of negative charge. (B)</p> Signup and view all the answers

Why are ionic compounds typically brittle solids?

<p>Because they have strong repulsive forces between ions when displaced. (C)</p> Signup and view all the answers

What is the most accurate description of a metal, according to the text?

<p>An element that readily loses valence electrons to form cations. (D)</p> Signup and view all the answers

A substance is found to be a crystalline solid with a high melting point that conducts electricity when dissolved in water. Which type of compound is it MOST likely to be?

<p>An ionic compound (A)</p> Signup and view all the answers

Which of the following CANNOT be classified as a metal, based on the information provided?

<p>Carbon (C)</p> Signup and view all the answers

Consider a hypothetical element 'X' that readily reacts with chlorine to form $XCl_2$, which is a solid at room temperature and conducts electricity only when molten. What can be inferred about the elemental nature of 'X'?

<p>'X' is likely a metal forming an ionic compound. (D)</p> Signup and view all the answers

Element 'Q' forms a compound with oxygen, $Q_2O_3$. The resulting oxide is a solid with an extremely high melting point and is a poor conductor of electricity in all phases. Additionally, 'Q' is known to be lustrous and malleable in its elemental form. Based on this evidence, which statement provides the most accurate classification and justification?

<p>'Q' is likely a metal; its lustrous and malleable nature suggests metallic bonding, but the poor conductivity of its oxide indicates strong covalent character within that specific compound, limiting electron mobility. (B)</p> Signup and view all the answers

How does the presence of sulfur dioxide ($SO_2$) in the environment affect the rate of corrosion?

<p>It dissolves in water to form an acid solution, increasing the rate of corrosion. (A)</p> Signup and view all the answers

Why do metals high in the electrochemical series corrode more easily?

<p>They have large positive oxidation potentials. (B)</p> Signup and view all the answers

How does the formation of a thin oxide film on aluminum and magnesium surfaces prevent further corrosion?

<p>The film is thin, closely packed, and protects the underlying metal. (B)</p> Signup and view all the answers

What is galvanized iron?

<p>Iron coated with zinc to prevent corrosion. (D)</p> Signup and view all the answers

Why are red lead and zinc chromate used in paints for preventing corrosion?

<p>They create a waterproof barrier that prevents contact with corrosive agents. (B)</p> Signup and view all the answers

How does alloying iron with chromium, as in stainless steel, prevent tarnishing?

<p>Chromium forms a passive oxide layer, protecting the iron from oxidation. (A)</p> Signup and view all the answers

What is the purpose of treating red-hot iron with steam to form a coating of magnetic iron oxide ($Fe_3O_4$)?

<p>To form a protective surface coating that prevents further corrosion. (D)</p> Signup and view all the answers

What is the function of burying pieces of active metal, such as magnesium, near pipelines and connecting them with wire?

<p>To act as a sacrificial anode, corroding instead of the pipeline. (A)</p> Signup and view all the answers

Which of the following statements accurately describes why gold (Au) and platinum (Pt) are often found in the native or free state in nature?

<p>They are highly unreactive and resistant to oxidation or other chemical combinations. (B)</p> Signup and view all the answers

Consider a scenario where a new alloy, 'MetalloSecure,' is designed to resist corrosion in harsh marine environments. 'MetalloSecure' consists of iron, chromium, nickel, and a proprietary element 'X'. Element 'X' has a unique characteristic: it forms an exceptionally dense and self-healing oxide layer when exposed to seawater. This layer is only a few nanometers thick but prevents chloride ions from penetrating the alloy's surface. Based on this information, which of the following mechanisms is most likely the primary reason 'MetalloSecure' exhibits superior corrosion resistance compared to traditional stainless steel?

<p>Element 'X' forms a highly impermeable oxide layer that effectively blocks the diffusion of corrosive ions, ensuring long-term protection. (B)</p> Signup and view all the answers

What type of charge do ions typically have in ionic compounds?

<p>Equal magnitude of positive and negative charges (D)</p> Signup and view all the answers

In what state do ionic compounds conduct electricity?

<p>Aqueous solution or molten state (D)</p> Signup and view all the answers

What makes ionic compounds brittle?

<p>Strong force of attraction between ions (D)</p> Signup and view all the answers

What is the typical physical state of ionic compounds at room temperature?

<p>Crystalline solids (B)</p> Signup and view all the answers

What happens to ions in solid ionic compounds that prevents electrical conductivity?

<p>They are strongly held and cannot move (A)</p> Signup and view all the answers

What is the most common way metals form ions?

<p>Lose valence electrons to form cations (D)</p> Signup and view all the answers

Which of the following is NOT a property of ionic compounds?

<p>Low melting point (D)</p> Signup and view all the answers

Approximately how many of the known elements are classified as metals?

<p>Around 90 (B)</p> Signup and view all the answers

Which of these materials is an example of a metal?

<p>Copper (D)</p> Signup and view all the answers

What holds ionic compounds together?

<p>Electrostatic forces (A)</p> Signup and view all the answers

Which of the following physical properties is generally associated with metals?

<p>Shining luster (D)</p> Signup and view all the answers

What is a common physical state for non-metals at room temperature?

<p>Gas, solid, or liquid (B)</p> Signup and view all the answers

Which of the following describes a chemical property of metals?

<p>They corrode easily. (A)</p> Signup and view all the answers

What type of ion do non-metals typically form?

<p>Negative ion (A)</p> Signup and view all the answers

What is a key characteristic of alloys?

<p>Do not have a fixed ratio of elements (B)</p> Signup and view all the answers

What is a typical property of metal oxides?

<p>Generally basic in nature (C)</p> Signup and view all the answers

Which metal reacts violently with cold water, often causing the evolved hydrogen to catch fire?

<p>Potassium (D)</p> Signup and view all the answers

What is a common use of metals, attributed to their properties?

<p>Electrical wiring (B)</p> Signup and view all the answers

In terms of oxidizing and reducing action, what role do metals typically play?

<p>Good reducing agents (D)</p> Signup and view all the answers

How do non-metals generally react with mineral acids?

<p>They generally do not react (C)</p> Signup and view all the answers

Which of the following metals does NOT react with water?

<p>Lead (A)</p> Signup and view all the answers

What type of compound is formed by the transfer of electrons from a metal to a non-metal?

<p>Ionic compound (B)</p> Signup and view all the answers

What is the other name for ionic compounds?

<p>Electrovalent compounds (A)</p> Signup and view all the answers

Which factor increases the rate of corrosion?

<p>Using corrosion agents combined with water (B)</p> Signup and view all the answers

In the context of corrosion, what occurs at the anodic site?

<p>Metal atoms lose electrons (B)</p> Signup and view all the answers

What is the chemical process involved in corrosion?

<p>Oxidation (B)</p> Signup and view all the answers

What do stainless steel and silicon alloys have in common regarding corrosion?

<p>They do not tarnish easily (D)</p> Signup and view all the answers

During corrosion, what do metal ions typically combine with in the environment during the propagation stage?

<p>Oxygen or water (D)</p> Signup and view all the answers

What chemical compound is formed on red-hot iron to prevent corrosion in stove pipes?

<p>Coating with magnetic iron oxide ($Fe_3O_4$) (D)</p> Signup and view all the answers

What is the eventual result of the termination stage in the corrosion process?

<p>Further chemical reactions are prevented (B)</p> Signup and view all the answers

What is the role of magnesium in preventing pipeline corrosion?

<p>It acts as a sacrificial anode (C)</p> Signup and view all the answers

What is the initial step in the mechanism of corrosion when a metal is exposed to a corrosive environment?

<p>Formation of anodic and cathodic sites (C)</p> Signup and view all the answers

What happens to metal atoms at the anodic site during the initiation of corrosion?

<p>They lose electrons and dissolve (B)</p> Signup and view all the answers

In what state are gold (Au) and platinum (Pt) typically found in nature?

<p>In the native or free state (B)</p> Signup and view all the answers

What is considered a viable source of metal?

<p>Ores (D)</p> Signup and view all the answers

What is consumed during propagation of metal corrosion at the cathodic site?

<p>Electrons (A)</p> Signup and view all the answers

What property defines a semiconductor?

<p>Electrical conductivity between a conductor and an insulator (C)</p> Signup and view all the answers

Which of the following reduces corrosion by coating the metal?

<p>Applying varnish and lacquers (A)</p> Signup and view all the answers

What is the effect of having a large positive oxidation potential on a metal?

<p>Increases the likelihood of corrosion (A)</p> Signup and view all the answers

What is formed when metals react with steam?

<p>Metal oxide and hydrogen (C)</p> Signup and view all the answers

Which physical state is characteristic of non-metals at room temperature?

<p>Solid, liquid, or gas (C)</p> Signup and view all the answers

What type of ion do metals typically form when they lose electrons?

<p>Cation (B)</p> Signup and view all the answers

What type of ion is typically formed by metals?

<p>Positive ion (C)</p> Signup and view all the answers

Which of the following is generally a characteristic of metal oxides?

<p>Basic (D)</p> Signup and view all the answers

What type of ion do non-metals form when they gain electrons?

<p>Anion (A)</p> Signup and view all the answers

What is the name of the compounds formed by the transfer of electrons from a metal to a non-metal?

<p>Ionic compounds (A)</p> Signup and view all the answers

Which term best describes the ability of a metal to be hammered into thin sheets?

<p>Malleability (D)</p> Signup and view all the answers

What are ionic compounds also known as?

<p>Electrovalent compounds (D)</p> Signup and view all the answers

What is a key difference between an alloy and a compound?

<p>Alloys do not have a fixed ratio of elements (B)</p> Signup and view all the answers

Which of the following describes corrosion?

<p>Chemical attack on a metal (D)</p> Signup and view all the answers

What happens when metals react with mineral acids?

<p>They form salt and liberate some gas (B)</p> Signup and view all the answers

Which of the following is a typical characteristic of metals?

<p>Good conductors of electricity (D)</p> Signup and view all the answers

What type of reaction is corrosion?

<p>Oxidation (B)</p> Signup and view all the answers

What initially forms on a metal surface exposed to a corrosive environment?

<p>Anodic and cathodic sites (A)</p> Signup and view all the answers

Compared to non-metals, how well do metals conduct heat?

<p>Much better (D)</p> Signup and view all the answers

What is the nature of hydrides formed by non-metals?

<p>Stable (B)</p> Signup and view all the answers

What happens to metal atoms at the anodic site during corrosion?

<p>They lose electrons and dissolve. (C)</p> Signup and view all the answers

What role do metals typically play in oxidation-reduction (redox) reactions?

<p>Reducing agents (B)</p> Signup and view all the answers

Which of the following factors increases the rate of corrosion?

<p>Presence of $SO_2$ (D)</p> Signup and view all the answers

Which group of metals, due to their position in the electrochemical series, corrode easily?

<p>Metals high in the electrochemical series (D)</p> Signup and view all the answers

What type of coating is formed on aluminum and magnesium that prevents further corrosion?

<p>A thin, closely packed film of oxide (A)</p> Signup and view all the answers

What process describes coating iron with zinc to prevent corrosion?

<p>Galvanization (D)</p> Signup and view all the answers

What is the purpose of red lead and zinc chromate in paints?

<p>To prevent corrosion (A)</p> Signup and view all the answers

What element is alloyed with iron to create stainless steel, preventing it from tarnishing?

<p>Chromium (D)</p> Signup and view all the answers

What is the purpose of burying magnesium near pipelines?

<p>To act as a sacrificial anode and prevent pipeline corrosion (D)</p> Signup and view all the answers

Why are gold (Au) and platinum (Pt) often found in their native state?

<p>They are resistant to corrosion and oxidation. (A)</p> Signup and view all the answers

What type of force holds oppositely charged ions together in ionic compounds?

<p>Electrostatic force (C)</p> Signup and view all the answers

Why are ionic compounds considered brittle?

<p>They break into pieces when pressure is applied due to ion repulsion. (B)</p> Signup and view all the answers

What kind of ions do metals form?

<p>Cations (C)</p> Signup and view all the answers

What is produced when a metal reacts with steam?

<p>Metal oxide and hydrogen (B)</p> Signup and view all the answers

What type of ion is formed when a metal loses electrons?

<p>Cation (D)</p> Signup and view all the answers

What type of ion is formed when a non-metal gains electrons?

<p>Anion (D)</p> Signup and view all the answers

In corrosion, at which site do metal atoms lose electrons?

<p>Anodic site (C)</p> Signup and view all the answers

During corrosion, what does the chemical attack on a metal result in?

<p>Oxidation (D)</p> Signup and view all the answers

Which environmental factor increases the rate of corrosion?

<p>Presence of sulfur dioxide (A)</p> Signup and view all the answers

In the propagation stage of corrosion, what do metal ions combine with?

<p>Oxygen or water (C)</p> Signup and view all the answers

Metals that are high in the electrochemical series tend to:

<p>Corrode more easily (D)</p> Signup and view all the answers

What occurs at the termination stage of corrosion?

<p>Corrosion stops (A)</p> Signup and view all the answers

How does the presence of a thin oxide film on aluminum prevent further corrosion?

<p>It forms a barrier to protect the underlying metal. (A)</p> Signup and view all the answers

What is the purpose of using red lead and zinc chromate in paints?

<p>To prevent corrosion (C)</p> Signup and view all the answers

Stainless steel resists tarnishing due to the presence of:

<p>Chromium (D)</p> Signup and view all the answers

Treating red-hot iron with steam forms a coating of magnetic iron oxide ($Fe_3O_4$) to:

<p>Prevent corrosion (A)</p> Signup and view all the answers

Burying magnesium near pipelines and connecting them with wire protects the pipeline by:

<p>Acting as a sacrificial anode (C)</p> Signup and view all the answers

Gold (Au) and platinum (Pt) are often found in the native state because they are:

<p>Unreactive (B)</p> Signup and view all the answers

What is a viable source of metal called?

<p>Ore (B)</p> Signup and view all the answers

Which physical state is typical for ionic compounds at room temperature?

<p>Solid (B)</p> Signup and view all the answers

When do ionic compounds conduct electricity?

<p>When in aqueous solution or molten (B)</p> Signup and view all the answers

What happens when pressure is applied to ionic compounds?

<p>They break into pieces (C)</p> Signup and view all the answers

Why don't solid ionic compounds conduct electricity?

<p>Ions are strongly held in place (B)</p> Signup and view all the answers

What charge do metals typically have when they form ions?

<p>Positive (B)</p> Signup and view all the answers

What is the typical melting and boiling point of ionic compounds?

<p>High (D)</p> Signup and view all the answers

Approximately how many known elements are classified as metals?

<p>Around 90 (A)</p> Signup and view all the answers

What is the process by which metals form ions?

<p>Lose valence electrons (A)</p> Signup and view all the answers

In what type of solvents are ionic compounds mostly soluble?

<p>Aqueous and polar solvents (B)</p> Signup and view all the answers

Which physical state is possible for non-metals at room temperature?

<p>Solid, liquid, or gas (B)</p> Signup and view all the answers

What type of oxide is typically formed by non-metals?

<p>Acidic (A)</p> Signup and view all the answers

Which of the following best describes the nature of hydrides formed by metals?

<p>Unstable (D)</p> Signup and view all the answers

What is a common property of metals?

<p>Shinning luster (B)</p> Signup and view all the answers

When metals react with mineral acids, what gas is typically produced?

<p>Hydrogen (D)</p> Signup and view all the answers

What role do metals generally play as oxidizing and reducing agents?

<p>Good reducing agents (B)</p> Signup and view all the answers

What is the general behavior of non-metals when exposed to mineral acids?

<p>They do not react (C)</p> Signup and view all the answers

What happens to metals when they undergo a chemical reaction?

<p>They lose electrons (B)</p> Signup and view all the answers

What is an alloy?

<p>A mixture of two or more metals, or a metal and another element (B)</p> Signup and view all the answers

Which of the following is a typical property of metals that makes them useful in electrical wiring?

<p>Ductility (D)</p> Signup and view all the answers

What is a common physical state for ionic compounds at room temperature?

<p>Crystalline solid (D)</p> Signup and view all the answers

How do ionic compounds behave in terms of electrical conductivity when in a solid state?

<p>Poor conductors (D)</p> Signup and view all the answers

Which of the following is a typical property of ionic compounds concerning melting and boiling points?

<p>High melting and boiling points (C)</p> Signup and view all the answers

What happens to ionic compounds when pressure is applied?

<p>They break into pieces (B)</p> Signup and view all the answers

How would you describe the solubility of ionic compounds in polar solvents?

<p>Highly soluble (A)</p> Signup and view all the answers

What happens to electrons in metals during ion formation?

<p>Metals lose electrons (B)</p> Signup and view all the answers

Which of these metals does NOT react with water?

<p>Lead (A)</p> Signup and view all the answers

What is created when a metal is exposed to a corrosive environment?

<p>Anodic and cathodic sites (D)</p> Signup and view all the answers

What happens at the anodic site during corrosion?

<p>Metal ions are formed (D)</p> Signup and view all the answers

What two things combine with metal ions, during the propagation of corrosion?

<p>Oxygen or water (D)</p> Signup and view all the answers

What is the eventual end result of corrosion?

<p>Consumption of metal (A)</p> Signup and view all the answers

Which of the following is a typical chemical property of metals?

<p>Tendency to lose electrons (B)</p> Signup and view all the answers

What generally happens when metals dissolve in mineral acids?

<p>Form a salt and liberate some gas (C)</p> Signup and view all the answers

Which of the following gases increases the rate of corrosion when dissolved in water?

<p>Sulfur dioxide (A)</p> Signup and view all the answers

What happens if a metal has large positive oxidation potentials?

<p>It corrodes easily (D)</p> Signup and view all the answers

What is formed when red-hot iron is treated with steam?

<p>Magnetic iron oxide ($Fe_3O_4$) (A)</p> Signup and view all the answers

What is the purpose of coating iron with zinc in the galvanization process?

<p>To prevent corrosion (A)</p> Signup and view all the answers

Which of the following is an example of preventing corrosion by alloying?

<p>Using stainless steel (A)</p> Signup and view all the answers

What type of metal is used to protect underground pipelines from corrosion by attaching it with a wire?

<p>Magnesium (C)</p> Signup and view all the answers

In what state are gold and platinum typically found in nature?

<p>In the native or free state (C)</p> Signup and view all the answers

What name is given to compounds of metals that are viable sources of that metal?

<p>Ores (C)</p> Signup and view all the answers

What type of material has electrical conductivity between that of a conductor and an insulator?

<p>Semiconductor (B)</p> Signup and view all the answers

What kind of film protects aluminum and magnesium against underlying corrosion?

<p>Thin closely packed film of oxide (A)</p> Signup and view all the answers

What holds oppositely charged ions together in ionic compounds?

<p>Electrostatic forces (D)</p> Signup and view all the answers

Which statement best describes the solubility of ionic compounds?

<p>Mostly soluble in water and polar solvents (C)</p> Signup and view all the answers

How many elements are classified as metals?

<p>Around 90 (D)</p> Signup and view all the answers

What is the process by which metals become positively charged ions?

<p>Losing electrons (D)</p> Signup and view all the answers

Which of the following is an example of a metal?

<p>Copper (A)</p> Signup and view all the answers

Which of the following metals does NOT typically react with water?

<p>Lead (C)</p> Signup and view all the answers

What do metals typically do with electrons when reacting with non-metals?

<p>Lose electrons to form cations (B)</p> Signup and view all the answers

What type of ion do non-metals form when reacting with metals?

<p>Anion (B)</p> Signup and view all the answers

During corrosion, where do metal atoms lose electrons?

<p>At the anodic site (B)</p> Signup and view all the answers

What ultimately happens to the metal during the termination stage of corrosion?

<p>All the metal is consumed (B)</p> Signup and view all the answers

What is the result of metal atoms losing electrons at the anodic site during the initiation of corrosion?

<p>Formation of metal ions (B)</p> Signup and view all the answers

Corrosion is considered what type of process?

<p>Electrochemical (B)</p> Signup and view all the answers

Which of the following describes the effect of sulfur dioxide ($SO_2$) on corrosion?

<p>It dissolves in water to form an acid, which increases the rate of corrosion. (B)</p> Signup and view all the answers

Why do metals that are high in the electrochemical series corrode more easily?

<p>They have large positive oxidation potentials. (C)</p> Signup and view all the answers

How does the formation of a thin oxide film on aluminum and magnesium prevent further corrosion?

<p>It acts as a barrier that prevents corrosive agents from reaching the underlying metal. (B)</p> Signup and view all the answers

What is the purpose of red lead and zinc chromate in paints used to prevent corrosion?

<p>They form a protective layer that prevents contact with corrosive agents. (A)</p> Signup and view all the answers

Why are pieces of magnesium buried near pipelines and connected with wire?

<p>To act as a source of electrons, preventing the oxidation of the iron pipeline. (C)</p> Signup and view all the answers

Why are gold (Au) and platinum (Pt) often found in the native or free state?

<p>They are noble metals and are resistant to corrosion and oxidation. (B)</p> Signup and view all the answers

What is a mineral?

<p>A naturally occurring compound of a metal. (B)</p> Signup and view all the answers

Which physical property is generally associated with metals?

<p>Ductility and malleability (A)</p> Signup and view all the answers

What is a common characteristic of metal oxides?

<p>Basic in nature (D)</p> Signup and view all the answers

Which of these describes non-metals at room temperature?

<p>Can be gas, solid, or liquid (A)</p> Signup and view all the answers

In terms of oxidizing and reducing agents, what role do metals play?

<p>Good reducing agents (A)</p> Signup and view all the answers

Which of the following describes an alloy?

<p>A mixture of two or more metals or a metal and another element (A)</p> Signup and view all the answers

Which of the following describes the nature of nonmetal oxides?

<p>They are typically acidic. (D)</p> Signup and view all the answers

Which of the following is a common physical state for ionic compounds at room temperature?

<p>Crystalline solid (D)</p> Signup and view all the answers

Why don't ionic compounds conduct electricity in the solid state?

<p>Ions are held strongly and cannot move (A)</p> Signup and view all the answers

What is the primary characteristic of metals related to electron behavior?

<p>They readily lose valence electrons. (C)</p> Signup and view all the answers

Which force holds oppositely charged ions together in ionic compounds?

<p>Electrostatic force (C)</p> Signup and view all the answers

What is a typical property of ionic compounds?

<p>High melting point (B)</p> Signup and view all the answers

Which of the following is an example of an ionic compound?

<p>$NaCl$ (A)</p> Signup and view all the answers

What is a typical chemical property of metals?

<p>Losing electrons to form positive ions (C)</p> Signup and view all the answers

What is a common physical property of metals?

<p>Ductility and malleability (D)</p> Signup and view all the answers

How does magnesium react with water?

<p>Reacts with hot water (C)</p> Signup and view all the answers

In general, what role do non-metals play as oxidizing and reducing agents?

<p>Good oxidizing agents (B)</p> Signup and view all the answers

Do non-metals typically react with mineral acids?

<p>No, they generally do not react (B)</p> Signup and view all the answers

Which of the following metals does NOT react with water at all?

<p>Lead (C)</p> Signup and view all the answers

What type of ion do metals typically form when reacting chemically?

<p>Cation (D)</p> Signup and view all the answers

Which of the following metals reacts violently with cold water?

<p>Potassium (D)</p> Signup and view all the answers

What are the compounds formed by the transfer of electrons from a metal to a non-metal called?

<p>Ionic compounds (C)</p> Signup and view all the answers

In the process of corrosion, what is consumed at the cathodic site?

<p>Electrons (C)</p> Signup and view all the answers

In the initiation stage of corrosion, what occurs at the anodic site?

<p>Metal atoms lose electrons (C)</p> Signup and view all the answers

What is the final result of the corrosion process?

<p>The metal is entirely consumed or the environement changes (C)</p> Signup and view all the answers

During the propagation stage of corrosion, what do metal ions typically combine with?

<p>Oxygen or Water (B)</p> Signup and view all the answers

How does the presence of sulfur dioxide ($SO_2$) in the environment affect the corrosion rate of metals?

<p>It increases the rate of corrosion by forming acid solutions. (C)</p> Signup and view all the answers

What property of metals that are high in the electrochemical series makes them more prone to corrosion?

<p>Large positive oxidation potentials (A)</p> Signup and view all the answers

How does the formation of a thin oxide film on the surface of aluminum and magnesium prevent corrosion?

<p>It prevents air and moisture from reaching the underlying metal. (C)</p> Signup and view all the answers

What is the purpose of using red lead or zinc chromate in paints to prevent corrosion?

<p>To create a barrier that prevents corrosive substances from reaching the metal. (B)</p> Signup and view all the answers

How does alloying iron with chromium, as in stainless steel, prevent corrosion?

<p>The chromium forms a passive oxide layer that protects the iron from corrosion. (C)</p> Signup and view all the answers

What is a semiconductor?

<p>A material with electrical conductivity between a conductor and an insulator. (B)</p> Signup and view all the answers

What state must an ionic compound be in to conduct electricity?

<p>Aqueous or molten (A)</p> Signup and view all the answers

What happens to the movement of ions in solid ionic compounds that prevents electrical conductivity?

<p>Ions are strongly held in place (B)</p> Signup and view all the answers

What happens to metals when they form ions?

<p>They lose electrons and become positively charged. (D)</p> Signup and view all the answers

What term is used to describe positive ions?

<p>Cations (A)</p> Signup and view all the answers

What type of chemical bond is typically formed between a metal and a non-metal through electron transfer?

<p>Ionic bond (C)</p> Signup and view all the answers

In the process of corrosion, what happens at the anodic site of a metal?

<p>Metal atoms dissolve by losing electrons (C)</p> Signup and view all the answers

During the initiation stage of corrosion, what is formed on the metal surface at the anodic site?

<p>Holes or pits (B)</p> Signup and view all the answers

What is the eventual outcome of the termination stage of corrosion?

<p>The metal is completely consumed, or the environment changes to prevent further reactions. (A)</p> Signup and view all the answers

What is released when metals react with steam

<p>Hydrogen (D)</p> Signup and view all the answers

What is the form of substance when metal atoms lose electron at anodic site?

<p>Metal ions (D)</p> Signup and view all the answers

What is the nature of corrosion?

<p>Chemical attack (C)</p> Signup and view all the answers

What describes the nature of oxides formed by metals?

<p>Basic (C)</p> Signup and view all the answers

What is the typical physical state of non-metals at room temperature?

<p>Can be solid, liquid, or gas (B)</p> Signup and view all the answers

What happens when potassium reacts with cold water?

<p>It reacts violently, and the evolved hydrogen catches fire (D)</p> Signup and view all the answers

Which of the following increases the rate of corrosion?

<p>The presence of corrosion agents (C)</p> Signup and view all the answers

Which metals corrode more easily due to their position in the electrochemical series?

<p>Metals with large positive oxidation potentials (B)</p> Signup and view all the answers

The formation of what type of film on aluminum and magnesium protects them from corrosion?

<p>A thin, closely packed oxide layer (C)</p> Signup and view all the answers

What is the process of coating iron with zinc called?

<p>Galvanization (D)</p> Signup and view all the answers

What substance are sometimes added to paints to prevent corrosion?

<p>Red lead (B)</p> Signup and view all the answers

What element is alloyed with iron to create stainless steel, which resists tarnishing?

<p>Chromium (D)</p> Signup and view all the answers

What is formed when red-hot iron is treated with steam to create a surface coating and prevent corrosion?

<p>Magnetic iron oxide ($Fe_3O_4$) (D)</p> Signup and view all the answers

Which metal is commonly used as a sacrificial anode to protect pipelines from corrosion?

<p>Magnesium (B)</p> Signup and view all the answers

What is the general term for natural metallic compounds?

<p>Minerals (C)</p> Signup and view all the answers

Which of the following elements are typically found in a native or free state in nature?

<p>Gold and Platinum (B)</p> Signup and view all the answers

When pressure is applied, what happens to ionic compounds?

<p>They shatter or break (B)</p> Signup and view all the answers

How many of the known elements are metals?

<p>Around 90 (D)</p> Signup and view all the answers

Which of the following describes the melting and boiling points of ionic compounds?

<p>High (B)</p> Signup and view all the answers

Which of the following is a characteristic of metals?

<p>Readily lose valence electrons to form positive ions (B)</p> Signup and view all the answers

What makes ionic compounds hard to break?

<p>Presence of electrostatic forces (B)</p> Signup and view all the answers

Which physical property is characteristic of metals?

<p>Ductility (C)</p> Signup and view all the answers

What state of matter can non-metals exist in at room temperature?

<p>Gas, liquid, or solid (D)</p> Signup and view all the answers

What type of oxides are generally formed by non-metals?

<p>Acidic (A)</p> Signup and view all the answers

In general, are metals good oxidizing or reducing agents?

<p>Good reducing agents (C)</p> Signup and view all the answers

What type of hydrides do non-metals usually form?

<p>Stable hydrides (C)</p> Signup and view all the answers

What type of chemical reaction is corrosion?

<p>Oxidation (B)</p> Signup and view all the answers

In the process of corrosion, what happens at the cathodic site?

<p>Electrons are gained (B)</p> Signup and view all the answers

What is the eventual outcome of the corrosion process if it is not stopped?

<p>All the metal is consumed. (C)</p> Signup and view all the answers

In the propagation stage of corrosion, with what do metal ions typically combine?

<p>Oxygen or water (B)</p> Signup and view all the answers

What type of charge do non-metals obtain when they gain electrons?

<p>Negative (A)</p> Signup and view all the answers

What effect does the presence of sulfur dioxide ($SO_2$) have on corrosion?

<p>It increases the rate of corrosion. (C)</p> Signup and view all the answers

How does a thin oxide film on aluminum and magnesium surfaces prevent further corrosion?

<p>It forms a closely packed, protective layer that prevents further reaction. (C)</p> Signup and view all the answers

What is the primary function of galvanization in preventing corrosion?

<p>Coating iron with zinc. (C)</p> Signup and view all the answers

What is the role of red lead and zinc chromate in paints for preventing corrosion?

<p>They act as a barrier to prevent contact with corrosive agents. (A)</p> Signup and view all the answers

Flashcards

Ionic Compounds

Chemical compounds held together by electrostatic forces between oppositely charged ions.

Crystalline Solids

Ionic compounds are structured in a repeating three-dimensional pattern of ions.

High Melting/Boiling Points

Relatively high temperatures required to change their state due to strong ionic bonds.

Conductivity in Aqueous/Molten State

Ionic compounds are able to carry electric charge when dissolved or melted.

Signup and view all the flashcards

Solubility in Polar Solvents

Ionic compounds tend to dissolve in polar solvents, like water.

Signup and view all the flashcards

Hardness

Ionic compounds are hard to break due to the strong attraction Between ions

Signup and view all the flashcards

Brittleness

Ionic compounds break into pieces when pressure is applied.

Signup and view all the flashcards

Electric Conduction (Ionic)

Only when molten or dissolved, allowing ions to move freely and carry charge.

Signup and view all the flashcards

Metals

Elements that easily lose valence electrons forming positive ions (cations).

Signup and view all the flashcards

Metals (definition)

They are chemical elements that readily lose valence electrons to form positive ions (cations).

Signup and view all the flashcards

Unreactive Metals

Metals like lead, copper, silver, and gold, that do not react with water.

Signup and view all the flashcards

Corrosion

The process where a metal is chemically attacked by its environment, leading to oxidation.

Signup and view all the flashcards

Anodic Sites

Locations on a metal surface where metal atoms lose electrons and dissolve during corrosion.

Signup and view all the flashcards

Cathodic Sites

Locations on a metal surface where electrons are gained during corrosion.

Signup and view all the flashcards

Initiation of Corrosion

Metal atoms lose electrons, becoming metal ions and creating pits on the surface.

Signup and view all the flashcards

Propagation of Corrosion

Metal ions combine with elements like oxygen or water to form metal oxides or hydroxides, accelerating corrosion.

Signup and view all the flashcards

Termination of Corrosion

The final stage where corrosion stops because all the metal is consumed or the environment changes.

Signup and view all the flashcards

Metals and Electron Loss

Metals lose electrons from their valence shells to form positive ions.

Signup and view all the flashcards

Non-Metals and Electron Gain

Non-metals gain electrons in their outer shells to form ions.

Signup and view all the flashcards

Physical Properties of Metals

Metals are typically solid at room temperature (except for Mercury), good conductors of heat and electricity, ductile, malleable, have a shining luster, high density, and high melting points.

Signup and view all the flashcards

Physical Properties of Non-metals

Non-metals can be gases, solids, or liquids at room temperature. They are poor conductors of heat and electricity, brittle, and lack metallic luster.

Signup and view all the flashcards

Chemical Properties of Metals

Metals tend to lose electrons to form positive ions (cations). They corrode easily.

Signup and view all the flashcards

Chemical Properties of Non-metals

Non-metals tend to gain electrons to form negative ions (anions).

Signup and view all the flashcards

Metals: Oxidizing/Reducing Action

Metals are generally good reducing agents, meaning they donate electrons. Their oxides are generally basic in nature.

Signup and view all the flashcards

Non-metals: Oxidizing/Reducing Action

Non-metals are generally good oxidizing agents, meaning they accept electrons. Their oxides are generally acidic in nature.

Signup and view all the flashcards

What is an Alloy?

An alloy is a mixture of two or more metals or a metal and another element. Alloys do not have a fixed ratio of elements.

Signup and view all the flashcards

Reaction of Potassium/Sodium with Water

Metals like potassium and sodium react violently with cold water, often producing enough heat to ignite the evolved hydrogen gas.

Signup and view all the flashcards

Reaction of Calcium with Water

Calcium reacts with water less violently than potassium or sodium. The heat evolved is not sufficient to ignite the hydrogen.

Signup and view all the flashcards

Reaction of Aluminum/Iron/Zinc with Water

Aluminum, iron, and zinc do not react with cold or hot water.

Signup and view all the flashcards

Corrosion Agents

Substances like SO2 and CO2 dissolve in water to form acids, accelerating corrosion.

Signup and view all the flashcards

Electrochemical Series

Metals higher in the electrochemical series (more positive oxidation potentials) corrode more readily.

Signup and view all the flashcards

Protective Film

A thin, closely packed film on the surface of a metal protects it from corrosion.

Signup and view all the flashcards

Metal Coating

Coating metals with another metal to prevent corrosion. (e.g., Iron coated with Zinc)

Signup and view all the flashcards

Paint/Varnish Coating

Using paints, varnishes, or lacquers to create a physical barrier against corrosive elements.

Signup and view all the flashcards

Alloying

Mixing metals to create alloys that are more resistant to corrosion.

Signup and view all the flashcards

Chemical Surface Coating

Using chemicals to form a protective surface coating on the metal.

Signup and view all the flashcards

Sacrificial Anode

Attaching a more active metal to protect the target metal from corrosion.

Signup and view all the flashcards

Ores

Natural occurring combined state of metal with other elements, only useful ones are called ores.

Signup and view all the flashcards

Semiconductor

Material with electrical conductivity between a conductor (copper) and an insulator (glass).

Signup and view all the flashcards

Ionic Bonds

Electrostatic forces that hold oppositely charged ions together in ionic compounds.

Signup and view all the flashcards

Charge Balance in Ionic Compounds

A compound where positive and negative ions balance each other out, resulting in a net neutral charge.

Signup and view all the flashcards

Metals (electron behavior)

Elements that readily lose valence electrons to form positive ions (cations).

Signup and view all the flashcards

Crystalline nature

Typically solid substances arranged in a repeating pattern made of ions.

Signup and view all the flashcards

Conductivity State

The state when ions are free to move and carry electric charge.

Signup and view all the flashcards

Cation Formation (Metals)

Metals becoming positive ions by losing electrons.

Signup and view all the flashcards

Number of Metals

The number of these out of 118 elements that are classified as metals.

Signup and view all the flashcards

Strong Interionic Forces.

Force of attraction between oppositely charged ions. This force makes them hard to break.

Signup and view all the flashcards

Metal examples

Examples of typical metals.

Signup and view all the flashcards

Valence electrons

The term used to describe electrons in the outermost shell of an atom.

Signup and view all the flashcards

What is Corrosion?

Reaction where metal atoms lose electrons in presence of moisture and air (oxygen).

Signup and view all the flashcards

Corrosion Definition

The chemical attack on a metal by its environment.

Signup and view all the flashcards

Metal Ion Formation

Metals lose electrons from their valence shells to form positive ions (cations).

Signup and view all the flashcards

Non-Metal Ion Formation

Non-metals gain electrons in their outer shells to form negative ions (anions).

Signup and view all the flashcards

Anodic Site (Corrosion)

A location on a metal surface where metal atoms lose electrons.

Signup and view all the flashcards

Cathodic Site (Corrosion)

A location on a metal surface where electrons are gained.

Signup and view all the flashcards

Corrosion Initiation

The step where metal atoms lose electrons and dissolve, forming pits.

Signup and view all the flashcards

Corrosion Propagation

Metal ions react with elements like oxygen or water, accelerating corrosion.

Signup and view all the flashcards

Corrosion Termination

The step where corrosion stops because all metal is consumed or the environment changes.

Signup and view all the flashcards

Metals as Reducing Agents

Metals are generally good at donating electrons in chemical reactions.

Signup and view all the flashcards

Nature of Metal Oxides

Metal oxides typically react with acids to form salts and water.

Signup and view all the flashcards

Non-Metals as Oxidizing Agents

Non-metals are generally good at accepting electrons in chemical reactions.

Signup and view all the flashcards

Nature of Non-Metal Oxides

Non-metal oxides typically react with bases to form salts and water.

Signup and view all the flashcards

Metal Hydrides

Metals usually form unstable compounds with hydrogen.

Signup and view all the flashcards

Non-Metal Hydrides

Non-metals typically form stable compounds with hydrogen.

Signup and view all the flashcards

Metals' Reaction with Acid

Metals typically react with acids to produce salts and hydrogen gas.

Signup and view all the flashcards

Non-Metals' Reaction with Acids

Non-metals generally do not react with mineral acids.

Signup and view all the flashcards

Electrons in Outer Shell (Metals)

Metals typically have 1-3 electrons in their outermost shell.

Signup and view all the flashcards

Electrons in Outer Shell (Non-Metals)

Non-metals commonly have 4-7 electrons in their outermost shell.

Signup and view all the flashcards

Protective Film/Coating

A thin, dense layer protecting the underlying metal from corrosion.

Signup and view all the flashcards

Attaching Active Metal

Attaching a more active metal (sacrificial anode) to protect another. (e.g. Magnesium)

Signup and view all the flashcards

Crystalline Solids (Ionic)

Solid compounds made of ions in a repeating pattern.

Signup and view all the flashcards

Conductivity of Ionic Compounds

Dissolving in water or melting allows ions to move freely and conduct electricity.

Signup and view all the flashcards

Solubility (Ionic)

The ability of ionic compounds to dissolve in solvents with charged poles.

Signup and view all the flashcards

Brittleness (Ionic)

Ionic compounds break when pressure is applied.

Signup and view all the flashcards

High Melting/Boiling Points (Ionic)

High temperatures needed to change state because of strong attraction between ions.

Signup and view all the flashcards

Nonmetals Definition

Materials that gain electrons to form negative ions (anions).

Signup and view all the flashcards

Ions

A charged atom or molecule.

Signup and view all the flashcards

Cation

A positively charged ion.

Signup and view all the flashcards

Metals lose electrons

Metals react by losing electrons from their outermost shell, forming positive ions.

Signup and view all the flashcards

Non-Metals gain electrons

Non-metals react by gaining electrons in their outermost shell, forming negative ions.

Signup and view all the flashcards

Electron Behavior Metallic vs Non-metallic

Metals tend to lose electrons to form positive ions; non-metals tend to gain electrons to form negative ions.

Signup and view all the flashcards

Oxidizing/Reducing Action

Metals are good reducing agents, while non-metals are good oxidizing agents.

Signup and view all the flashcards

Nature of Oxides

Metal oxides are generally basic, and non-metal oxides are generally acidic.

Signup and view all the flashcards

Nature of Hydrides

Metals usually form unstable hydrides, whereas non-metals usually form stable hydrides.

Signup and view all the flashcards

How Metals React to Acids?

Metals usually dissolve in mineral acids to form salt and liberate hydrogen gas.

Signup and view all the flashcards

Non-Metals vs Acids

Generally, non-metals do not react with mineral acids.

Signup and view all the flashcards

Metals Valence Electrons

Metals typically have 1-3 electrons in their outermost shell.

Signup and view all the flashcards

Non-Metals Valence Electrons

Non-metals typically possess 4-7 electrons in their outermost shell.

Signup and view all the flashcards

Metal Properties

Solid (except mercury); good conductors; ductile; malleable; lustrous; high density; high melting point.

Signup and view all the flashcards

Minerals and Ores

Natural sources of metals, only viable sources are called ores.

Signup and view all the flashcards

Crystalline Structure

Arranged in a repeating 3D pattern.

Signup and view all the flashcards

What is Ductility?

The ability of a metal to be drawn into wires.

Signup and view all the flashcards

What is Malleability?

The ability of a metal to be hammered or pressed into shape without breaking.

Signup and view all the flashcards

What is Metallic Luster?

A lustrous or shiny appearance.

Signup and view all the flashcards

What are Non-Metals?

Elements that tend to gain electrons to form negative ions.

Signup and view all the flashcards

Non-Metals: Electron Gain

Non-metals tend to gain electrons forming negative ions (anions).

Signup and view all the flashcards

Alloy Properties

Alloy mixtures will have varied properties dependent on it's elements.

Signup and view all the flashcards

Electrochemical Series and Corrosion

Reactivity increases as you go up the electrochemical series because they corrode more readily.

Signup and view all the flashcards

Corrosion Prevention

Coatings and surface treatments create a barrier to moisture and air, preventing electron loss of that metal.

Signup and view all the flashcards

Metals Reacting with Steam

The reaction where metals react with steam to produce metal oxide and hydrogen gas.

Signup and view all the flashcards

Electrovalent Compound

A compound formed when electrons are transferred from a metal to a non-metal.

Signup and view all the flashcards

Anion Formation (Non-Metals)

Non-metals Gain electrons in their outer shells to form negative ions.

Signup and view all the flashcards

Metal Coating (Corrosion Prevention)

Applying a layer of another metal over a metal to prevent corrosion (e.g., galvanization).

Signup and view all the flashcards

Paint/Varnish Coating (Corrosion)

Using paints, varnishes to seal and shield against corrosives.

Signup and view all the flashcards

Alloying (Corrosion Prevention)

Mixing metals to create a corrosion-resistant material.

Signup and view all the flashcards

Attaching a more active metal

Sacrificing metal that corrodes first, protecting another metal.

Signup and view all the flashcards

What are Metals?

Chemical elements that readily lose valence electrons to form positive ions (cations).

Signup and view all the flashcards

Metals & Electron Loss

Losing electrons to form positive ions (cations).

Signup and view all the flashcards

The Amount of metals

The number of these out of 118 elements that are classified as metals.

Signup and view all the flashcards

Conductivity and State

The state when ions are free to move and carry electric charge.

Signup and view all the flashcards

What is Ductility? (metals)

The property of a metal that allows it to be stretched into a wire.

Signup and view all the flashcards

K/Na Reaction with Water

Potassium and sodium react vigorously, and the heat can ignite the hydrogen gas released.

Signup and view all the flashcards

Ca Reaction with Water

Calcium reacts with water to form calcium hydroxide & hydrogen, but it's less violent than K/Na reactions.

Signup and view all the flashcards

Mg Reaction with Water

Magnesium reacts with hot water to form magnesium hydroxide and hydrogen.

Signup and view all the flashcards

Al/Fe/Zn and Water

Aluminum, iron, and zinc do not react with cold or hot water.

Signup and view all the flashcards

What is Brittleness?

The ease at which something can be broken or fractured when subjected to stress.

Signup and view all the flashcards

Formation of Sites

The mechanism where a metal is exposed to corrosive substances.

Signup and view all the flashcards

Electrochemical Series & Corrosion

Metals with larger positive oxidation potentials corrode more easily.

Signup and view all the flashcards

Metal Coating for Corrosion Prevention

Covering a metal with another metal to prevent corrosion.

Signup and view all the flashcards

Alloying for Corrosion Resistance

Mixing metals to create corrosion-resistant alloys.

Signup and view all the flashcards

Sacrificial Metal Usage

Attaching a more reactive metal to protect the target metal.

Signup and view all the flashcards

Ores (definition)

Viable sources of metals that can be extracted economically.

Signup and view all the flashcards

Semiconductor (definition)

A material with conductivity between a conductor and an insulator.

Signup and view all the flashcards

Metals form cations

Metals forming positive ions by losing electrons

Signup and view all the flashcards

Non-metals form anions

Non-metals forming negative ions by gaining electrons

Signup and view all the flashcards

Oxidation reaction in corrosion

The formation of metal oxides/hydroxides on the anodic site, where metals lose electrons.

Signup and view all the flashcards

Metals Losing Electrons

Readily giving up valence electrons to achieve a stable electron configuration.

Signup and view all the flashcards

Metal Cations

Positively charged ions formed when metals lose electrons.

Signup and view all the flashcards

Metal Characteristics

Typically solid, conductive, and lustrous elements.

Signup and view all the flashcards

Examples of Metals

Aluminum, copper, iron, tin, gold.

Signup and view all the flashcards

Ionic Compound Hardness

Ionic compounds are solids and are hard to break because of the force of attraction between the positive and negative ions.

Signup and view all the flashcards

Ionic compounds and Electricity

The molten or aqueous state when ions become free and act as charge carriers.

Signup and view all the flashcards

Brittleness of ionic compounds

Break into pieces when pressure is applied because of their crystal structure.

Signup and view all the flashcards

Protective Film (Corrosion)

A protective layer that prevents further corrosion.

Signup and view all the flashcards

Paint/Lacquer Coating (Corrosion)

Using paints or lacquers to create a barrier against corrosion.

Signup and view all the flashcards

Chemical Surface Coating (Corrosion)

Using chemicals to create a protective surface layer.

Signup and view all the flashcards

Sacrificial Metal

Attaching a more reactive metal to protect another.

Signup and view all the flashcards

Minerals (Metals)

Naturally occurring metal compounds.

Signup and view all the flashcards

Ores (Metals)

A mineral that is a viable source of a metal.

Signup and view all the flashcards

Malleability (Metals)

The ability of a metal to be deformed into a new shape or bent without fracturing.

Signup and view all the flashcards

Ductility (Metals)

The property of metals that allows them to be drawn into wires.

Signup and view all the flashcards

Metallic Luster

A lustrous or shiny appearance of a metal's surface, due to their ability to reflect light.

Signup and view all the flashcards

Electron Behavior

Metals tend to lose electrons, non-metals gain electrons

Signup and view all the flashcards

Metals Reacting with Acid

Metals dissolve in mineral acids to form salts and release hydrogen gas.

Signup and view all the flashcards

State at Room Temperature

Metals are solid, except mercury, while non-metals can be solid, liquid, or gas.

Signup and view all the flashcards

Ionic Compounds State

Ionic compounds are usually solids with ions arranged in a crystal.

Signup and view all the flashcards

Ionic electric state

Only conduct when dissolved or melted, allowing ions to move freely.

Signup and view all the flashcards

Ionic compounds: Solubility

Dissolving occurs in solvents with charged poles.

Signup and view all the flashcards

Metal reactivity

The ease with which metals lose electrons to form positive ions.

Signup and view all the flashcards

What are Minerals and Ores?

The source of most metals, the economical or viable metal are called ores.

Signup and view all the flashcards

What is Oxidation?

A type of chemical reaction in which a metal is chemically attacked by its environment.

Signup and view all the flashcards

What happens at Anodic Sites?

Electrons are lost, leading to the formation of metal ions.

Signup and view all the flashcards

What happens at Cathodic Sites?

Electrons are gained.

Signup and view all the flashcards

What is Corrosion Initiation?

The step in corrosion where metal atoms start to lose electrons.

Signup and view all the flashcards

What is Corrosion Propagation?

Metal ions move away and combine with other elements in the environment.

Signup and view all the flashcards

What is Corrosion Termination?

The stage when all the metal is gone, or the environment is changed.

Signup and view all the flashcards

What are Anodic Corrosion Sites?

Area where metals lose electrons and dissolve, forming pits.

Signup and view all the flashcards

What are Cathodic Corrosion Sites?

Area where electrons are gained, aiding the corrosion process.

Signup and view all the flashcards

What Causes Oxidation?

Loss of electrons at the anode.

Signup and view all the flashcards

What Causes Reduction?

Gain of electrons at the cathode.

Signup and view all the flashcards

Protective Surface Film

A protective layer on the metal surface that prevents corrosion.

Signup and view all the flashcards

Alloying for Corrosion Prevention

Mixing metals to create a corrosion-resistant material.

Signup and view all the flashcards

What is Thermal Conductivity?

The ability of a material to conduct heat.

Signup and view all the flashcards

What is Electrical Conductivity?

The ability of a material to conduct electricity.

Signup and view all the flashcards

Reduction

Metals are generally good at this, while non-metals are generally not good at it.

Signup and view all the flashcards

What is Cathodic Protection?

A more reactive metal is introduced to protect the target metal from corrosion.

Signup and view all the flashcards

Ionic Compounds: Conductivity

Substances made of ions that conduct electricity when dissolved in water or melted.

Signup and view all the flashcards

Ionic Compounds: Solid State Conductivity

The state where ions are held tightly due to electrostatic forces, thus cannot move freely.

Signup and view all the flashcards

Ionic Compounds: Structure

Ionic compounds are usually arranged how?

Signup and view all the flashcards

Metal Abundance

Amount of metal elements out of the total number of elements.

Signup and view all the flashcards

Ionic Compounds: High MP/BP

Relatively large amounts of energy are need because of the strong attraction between ions.

Signup and view all the flashcards

Ionic Solubility

Type of solvents in which ionic compounds dissolve.

Signup and view all the flashcards

Corrosion Tendency

Tendency for metals to deteriorate through oxidation.

Signup and view all the flashcards

Electric Conduction

The ability of a substance to carry electric current.

Signup and view all the flashcards

Cation Formation

Metals lose electrons to form positively charged ions.

Signup and view all the flashcards

Anion Formation

Non-metals gain electrons to gain negative charged ions

Signup and view all the flashcards

Corrosive Environment

How a metal is exposed to a corrosive environment, it creates anodic and cathodic sites on its surface.

Signup and view all the flashcards

What are Alloys?

Mixtures of two or more metals (or a metal and another element).

Signup and view all the flashcards

What is Metal Coating?

Coating metals to prevent corrosion.

Signup and view all the flashcards

What are Corrosion Agents?

The process by how acids accelerate corrosion.

Signup and view all the flashcards

Ionic Compound Properties

Solid materials, usually crystalline, with high melting/boiling points and conduct electricity when molten or dissolved.

Signup and view all the flashcards

Ionic Compounds Brittleness

Breaking into pieces under pressure due to their crystal structure.

Signup and view all the flashcards

Ionic Conductivity

Ions are free to move and carry charge in this form of ionic compounds.

Signup and view all the flashcards

Metals: Oxidation

The process of metals losing electrons to form positive ions.

Signup and view all the flashcards

Non-Metals: Reduction

The process of non-metals gaining electrons to form negative ions.

Signup and view all the flashcards

Corrosion Rate

Speed of metal deterioration due to environmental factors.

Signup and view all the flashcards

Electrochemical Series (Corrosion)

The arrangement of metals based on their oxidation potentials; higher position means easier corrosion.

Signup and view all the flashcards

Metal Coating (Corrosion)

Applying a layer of a different metal, like zinc, to prevent corrosion.

Signup and view all the flashcards

Paint/Varnish (Corrosion)

Using paints, varnishes, or lacquers to shield the metal from corrosion.

Signup and view all the flashcards

Alloying (Corrosion)

Mixing metals to create a corrosion-resistant material, like stainless steel.

Signup and view all the flashcards

Chemical Coating (Corrosion)

Forming a protective surface coating using chemical reactions.

Signup and view all the flashcards

More Like This

Unit 2: Properties of Group 1 Materials
25 questions

Unit 2: Properties of Group 1 Materials

ComfortableTropicalIsland3660 avatar
ComfortableTropicalIsland3660
Materials and Properties in Chemistry
5 questions
Use Quizgecko on...
Browser
Browser