Metals and Their Reactions with Water

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Questions and Answers

What products are formed when sodium reacts with water?

Sodium hydroxide and hydrogen gas (correct)

Sodium hydroxide and oxygen

Pressure increased and sodium vapor

Sodium oxide and hydrogen gas

What is the result of passing steam over zinc metal?

Zinc chloride and zinc oxide

Zinc hydroxide and hydrogen gas

Zinc oxide and no gas produced

Zinc oxide and hydrogen gas (correct)

Which metal reacts vigorously with water to form hydroxide and liberate hydrogen gas?

Iron

Zinc

Calcium (correct)

Aluminum

What is produced when aluminum reacts with dilute hydrochloric acid?

Aluminum chloride and hydrogen gas Signup and view all the answers

What happens when magnesium metal is reacted with cold water?

It reacts slowly to form magnesium hydroxide. Signup and view all the answers

What is formed when iron reacts with moisture in the air over time?

Rust (iron oxide) Signup and view all the answers

What kind of reaction occurs when metals react with dilute acids?

Metal produces its respective salt and hydrogen gas. Signup and view all the answers

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

Zinc Signup and view all the answers

What is the charge of a chlorine ion after it gains an electron?

One negative charge Signup and view all the answers

Which metal is primarily used for galvanizing iron?

Zinc Signup and view all the answers

What property do superconductors have at critical temperatures?

Zero resistance to electrical currents Signup and view all the answers

Which non-metal is used for making matches?

Phosphorus Signup and view all the answers

Which of the following is a use of mercury?

Thermometers Signup and view all the answers

What is the reactivity of copper when dipped in aluminum nitrate solution?

Copper is less reactive than aluminum. Signup and view all the answers

In which applications are radioactive metals primarily used?

Producing atomic energy Signup and view all the answers

Which of the following non-metals is an exception in terms of hardness?

Diamond Signup and view all the answers

Which state do most non-metals exist in at room temperature?

Solid, liquid, or gaseous state Signup and view all the answers

How is chlorine utilized in water purification?

As bleaching powder Signup and view all the answers

Which substance is used to prevent dental decay?

Fluorine compounds Signup and view all the answers

Which of the following properties is NOT true for non-metals?

Non-metals have luster at all times. Signup and view all the answers

What type of oxides do non-metals form when they react with oxygen?

Respective oxides Signup and view all the answers

Which of the following non-metals is an example of a liquid at room temperature?

Bromine Signup and view all the answers

Non-metals typically have which property regarding malleability?

Non-metals are non-malleable. Signup and view all the answers

What is the typical density of gaseous non-metals?

Low density Signup and view all the answers

Why is sodium stored in kerosene oil?

To prevent it from reacting with air and water Signup and view all the answers

Which metal is the most reactive based on the provided reactions?

B Signup and view all the answers

What will occur when B is added to a solution of copper (II) sulphate?

There will be a displacement reaction producing Cu Signup and view all the answers

Which equation represents the reaction of zinc with iron (II) sulphate?

Zn + FeSO4 → ZnSO4 + Fe Signup and view all the answers

What gas is produced when dilute hydrochloric acid reacts with a reactive metal?

Hydrogen gas Signup and view all the answers

How can you arrange the metals A, B, C, and D in order of their decreasing reactivity?

B > A > C > D Signup and view all the answers

What type of bonding occurs due to the complete transfer of valence electrons?

Ionic bonding Signup and view all the answers

What would happen in the reaction of metal C with iron (II) sulphate?

No reaction will occur Signup and view all the answers

What is the primary reason electrolysis methods are preferred for extracting certain metals?

Water is not discharged at the cathode. Signup and view all the answers

During the roasting process of sulphide ores, what is primarily produced?

Metal oxides and sulfur dioxide Signup and view all the answers

Which of the following chemical reactions illustrates the reduction of lead oxide using carbon?

PbO + C → Pb + CO Signup and view all the answers

What type of reducing agent is typically used in the thermite process?

Aluminium Signup and view all the answers

In the auto-reduction process of copper extraction, what occurs following partial roasting?

The remaining sulphides reduce the copper oxide. Signup and view all the answers

What is the significance of using more reactive metals in the reduction of less reactive metal compounds?

It provides sufficient heat to melt the produced metals. Signup and view all the answers

Which method is typically not used for the extraction of highly reactive metals like sodium?

Electrolysis of aqueous solutions Signup and view all the answers

What happens to the sulphide ores before being reduced to metal?

They are converted into metal oxides. Signup and view all the answers

Why are sodium, potassium, and lithium stored in kerosene oil?

To protect them from contact with air and moisture Signup and view all the answers

What property of aluminium helps it resist corrosion?

Its ability to form aluminium oxide Signup and view all the answers

What is the main reason copper tarnishes when exposed to moist air?

Reaction with carbon dioxide to form copper carbonate Signup and view all the answers

Which of the following statements is true about metals and non-metals?

Metals form ionic bonds while non-metals form covalent bonds. Signup and view all the answers

What happens to a carbonate ore during the extraction of metals?

It is converted into an oxide. Signup and view all the answers

What is the effect of citric acid from lemon or tamarind juice on tarnished copper?

It neutralizes copper carbonate and dissolves the layer. Signup and view all the answers

Which characteristic is NOT true for metals?

They do not react with salt solutions. Signup and view all the answers

How do non-metals typically react with oxygen?

To form acidic or neutral oxides Signup and view all the answers

Study Notes

Metals and Non-metals

Metals are mostly solids at room temperature, except mercury which is liquid.
Non-metals can be solids, liquids, or gases at room temperature.
Metals generally have a shiny surface (luster).
Non-metals generally do not have a shiny surface.
Metals are typically good conductors of heat and electricity.
Non-metals are typically poor conductors of heat and electricity, except for graphite (a form of carbon).
Metals are usually malleable (can be hammered into sheets) and ductile (can be drawn into wires).
Non-metals are usually brittle.
Metals are typically hard, except for sodium and potassium which are soft.
Non-metals can vary in hardness.
Metals generally have high density.
Non-metals generally have low density.
Metals generally have high melting and boiling points.
Non-metals generally have low melting and boiling points.
Metals generally have a grey color, but some are exceptions (gold, copper).

Chemical Properties of Metals

Most metals react with oxygen to form metal oxides.
Alkali metals react vigorously with oxygen.
Some metals react with water to form metal hydroxides and hydrogen gas.
Alkali metals react very vigorously with water.
Many metals react with dilute acids to form metal salts and hydrogen gas.
Some metals do not react with water (e.g. copper, gold, silver).

Chemical Properties of Non-metals

Non-metals react with oxygen to form non-metal oxides (acidic).
Non-metals react with chlorine to form non-metal chlorides.

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Description

This quiz explores the reactions of various metals with water and acids. Test your knowledge on the products formed when sodium, magnesium, and aluminum react, as well as the behavior of metals like zinc and iron. Each question will challenge your understanding of metal reactivity and chemical processes.