Reactivity of Metals: Interactive Quizzes and Learning Resources

Question 1

Why do some metals react more readily with oxygen than others? Give an example to support your answer.

Accepted Answer

Metals react differently with oxygen because of their electron arrangements and the strength of their bonds.

Answer

All metals react with oxygen at the same speed, forming oxides.

Answer

The reactivity of metals with oxygen is determined only by their atomic mass.

Answer

Reactivity with oxygen has nothing to do with a metal's position on the periodic table.

Question 2

Which metal reacts with dilute hydrochloric acid to produce hydrogen gas, which burns with a popping sound?

Accepted Answer

Magnesium

Answer

Copper

Answer

Gold

Answer

Iron

Question 3

Which metal reacts most vigorously with dilute hydrochloric acid, according to the reactivity series?

Accepted Answer

Magnesium

Answer

Copper

Answer

Iron

Answer

Zinc

Question 4

Which metal is the most reactive?

Accepted Answer

Potassium

Answer

Iron

Answer

Copper

Answer

Gold

Question 5

Which metal reacts with water at room temperature, releasing hydrogen gas?

Accepted Answer

Potassium

Answer

Copper

Answer

Iron

Question 6

Which of these metals is the most reactive?

Accepted Answer

Sodium

Answer

Copper

Answer

Iron

Answer

Gold

Question 7

Which metal reacts most vigorously with water at room temperature?

Accepted Answer

Sodium

Answer

Copper

Answer

Iron

Answer

Gold

Question 8

Which metal reacts most vigorously with water at room temperature?

Accepted Answer

Sodium

Answer

Copper

Answer

Iron

Answer

Gold

Question 9

Which metal is the most reactive, according to the reactivity series of metals?

Accepted Answer

Potassium

Answer

Copper

Answer

Iron

Question 10

Which metal is the least reactive?

Accepted Answer

Gold

Answer

Potassium

Answer

Iron

Answer

Sodium

Question 11

Which metal is the most reactive, based on the reactivity series?

Accepted Answer

Potassium

Answer

Gold

Answer

Iron

Question 12

The reaction between sodium and water yields:

Accepted Answer

Hydrogen gas and sodium hydroxide

Answer

Hydrogen gas and oxygen gas

Answer

Sodium chloride and water

Answer

No reaction occurs

Question 13

Which factor does not influence the reaction rate between a metal and an acid?

Accepted Answer

Volume of the reaction vessel

Answer

Concentration of the acid

Answer

Surface area of the metal

Answer

Temperature

Question 14

The reaction between iron and oxygen is characterized as:

Accepted Answer

Exothermic

Answer

Endothermic

Answer

Neither exothermic nor endothermic

Answer

Irreversible

Question 15

Which metal is commonly used to protect iron from rusting?

Accepted Answer

Zinc

Answer

Copper

Answer

Aluminium

Answer

Magnesium

Question 16

Which of the following metals reacts with dilute hydrochloric acid to produce hydrogen gas?

Accepted Answer

Zinc

Answer

Copper

Answer

Silver

Answer

Gold

Question 17

The reaction between sodium and chlorine is:

Accepted Answer

Exothermic, producing sodium chloride

Answer

Endothermic, producing sodium chloride

Answer

Exothermic, producing sodium oxide

Answer

Endothermic, producing sodium oxide

Question 18

Which metal in the reactivity series reacts most vigorously with water?

Accepted Answer

Sodium

Answer

Magnesium

Answer

Zinc

Answer

Iron

Question 19

What gas is produced when a metal reacts with an acid?

Accepted Answer

Hydrogen

Answer

Oxygen

Answer

Carbon dioxide

Answer

Nitrogen

Question 20

Which of the following factors does NOT affect the reactivity of a metal?

Accepted Answer

Volume of the metal

Answer

Temperature

Answer

Surface area

Answer

Concentration of the reactants

Question 21

Why does iron rust?

Accepted Answer

It reacts with oxygen in the air

Answer

It reacts with water in the air

Answer

It reacts with carbon dioxide in the air

Answer

It reacts with nitrogen in the air

Question 22

What is the purpose of adding an inhibitor to a metal?

Accepted Answer

To decrease its reactivity

Answer

To increase its reactivity

Answer

To make it more shiny

Answer

To make it more brittle

Question 23

Which of the following metals is the most noble?

Accepted Answer

Gold

Answer

Silver

Answer

Copper

Answer

Iron

Question 24

What type of reaction occurs when a metal reacts with a salt solution?

Accepted Answer

Displacement reaction

Answer

Combination reaction

Answer

Decomposition reaction

Answer

Neutralization reaction

Question 25

What is the product of the reaction between sodium and water?

Accepted Answer

Sodium hydroxide and hydrogen

Answer

Sodium oxide and hydrogen

Answer

Sodium chloride and water

Answer

No reaction occurs

Question 26

What type of reaction occurs between a metal and an acid?

Accepted Answer

Displacement

Answer

Neutralization

Answer

Combustion

Answer

Oxidation

Question 27

What is the benefit of using a more concentrated acid in a reaction?

Accepted Answer

Increases the reaction rate

Answer

Decreases the reaction rate

Answer

Makes the reaction more exothermic

Answer

Makes the reaction less exothermic

Question 28

Which metal is commonly used as a sacrificial anode in cathodic protection?

Accepted Answer

Zinc

Answer

Copper

Answer

Iron

Answer

Aluminium

Question 29

What is the key difference between a displacement reaction and a redox reaction?

Accepted Answer

Displacement reactions involve ion exchange, while redox reactions involve electron transfer.

Answer

Redox reactions involve ion exchange, while displacement reactions involve electron transfer.

Answer

Displacement reactions involve only one metal, while redox reactions involve two metals.

Answer

Redox reactions involve only one metal, while displacement reactions involve two metals.

Question 30

Why is it essential to clean the surface of a metal before an experiment?

Accepted Answer

To remove impurities that could affect the reaction

Answer

To make the metal visually appealing

Answer

To increase the surface area of the metal

Answer

To increase the reactivity of the metal

Question 31

Which safety measures should be followed when working with reactive metals?

Accepted Answer

Wear gloves, goggles, and work in a well-ventilated area

Answer

Handle the metals with bare hands and work in a closed room

Answer

Keep the metals away from water and acids

Answer

Wear a mask and work outdoors

Question 32

Which metal is the most reactive, according to the reactivity series?

Accepted Answer

Potassium

Answer

Gold

Answer

Silver

Answer

Iron

Question 33

When a metal reacts with oxygen, what type of compound is typically formed?

Accepted Answer

Metal oxide

Answer

Metal hydroxide

Answer

Metal salt

Answer

Metal carbonate

Question 34

Which metal is used to coat iron to protect it from rust?

Accepted Answer

Zinc

Answer

Iron

Answer

Copper

Answer

Aluminium

Question 35

What is the primary purpose of a displacement reaction in a reactivity series?

Accepted Answer

To determine the order of reactivity of metals

Answer

To produce a more reactive metal

Answer

To produce a less reactive metal

Answer

To produce a new compound

Question 36

Which of the following reactions is a redox reaction?

Accepted Answer

Reaction of a metal with oxygen

Answer

Reaction of a metal with water

Answer

Reaction of an acid with a base

Answer

Reaction of a salt with water

Question 37

Which metal reacts most vigorously with dilute hydrochloric acid?

Accepted Answer

Magnesium

Answer

Copper

Answer

Iron

Answer

Gold

Question 38

Which metal reacts most vigorously with water?

Accepted Answer

Potassium

Answer

Copper

Answer

Silver

Answer

Gold

Question 39

When a metal reacts with an acid, the products are a salt and a gas. Which of the following acids reacts with magnesium to produce magnesium chloride and hydrogen gas?

Accepted Answer

Hydrochloric acid

Answer

Sulfuric acid

Answer

Nitric acid

Answer

Acetic acid

Question 40

Which of the following reactions is a displacement reaction?

Accepted Answer

Copper reacting with silver nitrate

Answer

Iron reacting with water

Answer

Sodium reacting with chlorine

Answer

Magnesium reacting with hydrochloric acid

Question 41

A student places a strip of magnesium into a solution of copper sulfate. What will be the color of the solution after a few minutes?

Accepted Answer

Green

Answer

Blue

Answer

Colorless

Answer

Red

Question 42

Which of the following metals is the least reactive?

Accepted Answer

Gold

Answer

Potassium

Answer

Sodium

Answer

Copper

Question 43

When a metal is oxidized, what happens to its electrons?

Accepted Answer

They are lost

Answer

They are gained

Answer

They are transferred

Answer

They are rearranged

Question 44

What is the chemical formula for the oxide of sodium?

Accepted Answer

Na2O

Answer

NaO

Answer

Na2O2

Answer

NaO2

Question 45

Which metal is the most reactive in the following list?

Accepted Answer

Potassium

Answer

Magnesium

Answer

Zinc

Answer

Iron

Question 46

What is the main product of the reaction between a metal and water?

Accepted Answer

Hydrogen gas

Answer

Oxygen gas

Answer

Carbon dioxide gas

Answer

No reaction occurs

Question 47

Which factor does NOT affect the rate of a reaction between a metal and an acid?

Accepted Answer

Total mass of the reactants

Answer

Concentration of the acid

Answer

Temperature

Answer

Surface area of the metal

Question 48

What type of compound is formed when a metal reacts with oxygen?

Accepted Answer

Metal oxide

Answer

Metal hydroxide

Answer

Metal carbonate

Answer

Metal chloride

Question 49

What is the main role of a catalyst in a chemical reaction?

Accepted Answer

Decreases the activation energy

Answer

Increases the activation energy

Answer

Provides an alternative pathway for the reaction

Answer

Slows down the reaction

Question 50

Which metal is used in the industrial production of aluminium?

Accepted Answer

Magnesium

Answer

Sodium

Answer

Potassium

Answer

Calcium

Question 51

What is the main purpose of adding salt to water when boiling an egg?

Accepted Answer

To increase the boiling point of the water

Answer

To decrease the boiling point of the water

Answer

To make the egg more flavorful

Answer

To prevent the egg from cracking

Question 52

How can the electrochemical potential of a metal be used to predict its reactivity? Provide examples to support your answer.

Accepted Answer

Metals with a higher electrochemical potential are more reactive because they are more easily oxidized.

Answer

Metals with a lower electrochemical potential are more reactive because they are more easily reduced.

Answer

The electrochemical potential of a metal is not related to its reactivity.

Question 53

Which of the following metals is used as a sacrificial anode in cathodic protection?

Accepted Answer

Zinc

Answer

Copper

Answer

Iron

Answer

Aluminum

Question 54

What is the role of electrolysis in the extraction of metals?

Accepted Answer

To reduce the metal ions in the ore to form the metal

Answer

To oxidize the metal ions in the ore to form the metal

Answer

To separate the metal from the impurities in the ore

Answer

To purify the metal after it has been extracted

Question 55

What is the oxidation state of the metal in the compound Fe2O3?

Accepted Answer

+3

Answer

+2

Answer

-2

Answer

-3

Question 56

Which of the following metals is used in the production of steel?

Accepted Answer

Iron

Answer

Copper

Answer

Aluminum

Answer

Zinc

Question 57

What is the main reason why aluminum is used in aircraft construction?

Accepted Answer

It is lightweight

Answer

It is strong

Answer

It is corrosion-resistant

Answer

It is cheap

Question 58

In the reactivity series of metals, which one is the most reactive?

Accepted Answer

Sodium

Answer

Potassium

Answer

Calcium

Answer

Magnesium

Question 59

What is the product when a metal reacts with water, specifically forming a metal hydroxide and hydrogen gas?

Accepted Answer

A base

Answer

An acid

Answer

A salt

Answer

A gas

Question 60

What is the main purpose of using a displacement reaction to compare the reactivity of metals?

Accepted Answer

To determine which metal is more likely to react with a given solution

Answer

To remove impurities from metals

Answer

To produce a pure metal from its ore

Answer

To generate electricity

Question 61

Which of the following metals will react with dilute hydrochloric acid to produce hydrogen gas?

Accepted Answer

Potassium

Answer

Copper

Answer

Gold

Answer

Silver

Question 62

In the formation of metal oxides, what is the role of oxygen?

Accepted Answer

Oxygen acts as an oxidizing agent

Answer

Oxygen acts as a reducing agent

Answer

Oxygen acts as a catalyst

Answer

Oxygen acts as a buffer

Question 63

What type of chemical reaction occurs when a metal combines with oxygen to form a metal oxide?

Accepted Answer

Combination reaction

Answer

Decomposition reaction

Answer

Single displacement reaction

Answer

Double displacement reaction

Question 64

Which metal is the most reactive among the following options?

Accepted Answer

Sodium

Answer

Iron

Answer

Copper

Answer

Gold