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Questions and Answers
Which metal will react violently with dilute acids?
Which metal will react violently with dilute acids?
Zinc can displace copper from copper(II) sulfate solution.
Zinc can displace copper from copper(II) sulfate solution.
True
What is the general reaction equation for a metal reacting with an acid?
What is the general reaction equation for a metal reacting with an acid?
Metal + Acid ⟶ Salt + Hydrogen
The reaction of calcium with water produces calcium hydroxide and __________.
The reaction of calcium with water produces calcium hydroxide and __________.
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Match the metals with their reactivity levels:
Match the metals with their reactivity levels:
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Which of the following statements is true regarding metals and water?
Which of the following statements is true regarding metals and water?
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Metal reactivity increases as one moves down the reactivity series.
Metal reactivity increases as one moves down the reactivity series.
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What is produced when metals react with acids?
What is produced when metals react with acids?
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What happens to the blue color of the CuSO4 solution during the reaction with magnesium?
What happens to the blue color of the CuSO4 solution during the reaction with magnesium?
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Rust is a solid substance that helps protect iron from corrosion.
Rust is a solid substance that helps protect iron from corrosion.
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What is the chemical reaction for rust formation?
What is the chemical reaction for rust formation?
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Rusting can be prevented by using __________ methods like paint or grease.
Rusting can be prevented by using __________ methods like paint or grease.
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Which method involves using a more reactive metal to protect a less reactive metal?
Which method involves using a more reactive metal to protect a less reactive metal?
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Match the rust prevention methods with their descriptions:
Match the rust prevention methods with their descriptions:
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The process of __________ involves dipping iron in molten zinc for protection.
The process of __________ involves dipping iron in molten zinc for protection.
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Zinc is less reactive than iron and helps prevent rust through sacrificial protection.
Zinc is less reactive than iron and helps prevent rust through sacrificial protection.
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What happens during a redox reaction?
What happens during a redox reaction?
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In rust formation, iron is oxidized while oxygen is reduced.
In rust formation, iron is oxidized while oxygen is reduced.
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What is the purpose of sacrificial protection in rust prevention?
What is the purpose of sacrificial protection in rust prevention?
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In the reaction between magnesium and copper(II) sulfate, magnesium acts as a ______ agent.
In the reaction between magnesium and copper(II) sulfate, magnesium acts as a ______ agent.
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Match the terms related to redox reactions with their correct descriptions:
Match the terms related to redox reactions with their correct descriptions:
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Which of the following describes a characteristic of oxidizing agents?
Which of the following describes a characteristic of oxidizing agents?
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Oxidation can occur without reduction in a chemical reaction.
Oxidation can occur without reduction in a chemical reaction.
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What is formed when iron reacts with oxygen?
What is formed when iron reacts with oxygen?
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Study Notes
Metals Reacting with Water and Acids
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Metals react with water and acids, and this reactivity is used to create a reactivity series.
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The series orders metals based on their reaction with water and acids.
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Potassium and sodium react violently with water.
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Calcium reacts less violently with water.
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Magnesium, iron, and zinc react slowly with cold water.
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Metals above hydrogen in the reactivity series react with dilute acids.
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More reactive metals produce more vigorous reactions with dilute acids.
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The general equation for a metal reacting with an acid is: Metal + Acid → Salt + Hydrogen
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Example: Ca + 2H₂O → Ca(OH)₂ + H₂
Metal Displacement Reactions
- The reactivity of metals determines if displacement reactions will occur.
- More reactive metals displace less reactive metals from their compounds.
- Example: Iron displacing copper from copper(II) chloride.
- Example: Zinc reducing copper(II) oxide.
Displacement Reactions in Aqueous Solutions
- Reactive metals can displace less reactive metals from aqueous metal salt solutions.
- This reaction involves a change in the colour of the solution and the formation of a new metal.
- Example: Magnesium displacing copper from copper(II) sulfate solution.
Order of Metal Reactivity
- A mnemonic device (P-Please, S-Send, L-Lions, etc.) can help remember the order of reactivity.
- Reactivity decreases as you move down the list.
Rusting of Iron
- Rusting is iron's corrosion in the presence of water and oxygen.
- Water and oxygen are needed for rust to form.
- Rust is hydrated iron(III) oxide.
- Barrier methods (e.g., paint, oil) prevent rust formation by creating a barrier.
- Sacrificial protection involves using a more reactive metal to protect iron.
- Galvanizing is a common method for sacrificial protection, using zinc to coat iron.
Oxidation and Reduction
- Oxidation is a loss of electrons or a gain of oxygen.
- Reduction is a gain of electrons or a loss of oxygen.
- Redox reactions involve both oxidation and reduction occurring simultaneously.
- Examples of redox reactions are seen in rusting and displacement reactions.
- Oxidising agents gain electrons.
- Reducing agents lose electrons.
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Description
Explore the reactivity of metals with water and acids in this quiz. Learn about the reactivity series and how it influences metal displacement reactions. Test your understanding of examples and the general equations that govern these chemical interactions.
