Lesson T5.2.1

T5.2.1 Acids reacting with metals Quiz: KS3 Chemistry, Unit 5

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

In partnership with Revision Ninja

Lesson T5.2.1, Acids reacting with metals: 20 multiple choice questions for the KS3 Chemistry (National Curriculum), Unit 5: Acids and alkalis, written with Revision Ninja.

Host it live on the board and students join with a game code on their own devices, or revise alone with Free Play. The answers are revealed in the game.

Host this setFree Play

The 20 questions

  1. What two substances are made when an acid reacts with a metal?

    • A salt and chlorine gas
    • A salt and oxygen gas
    • A salt and hydrogen gas
    • Water and carbon dioxide

  2. Which gas is produced when zinc reacts with dilute hydrochloric acid?

    • Hydrogen
    • Carbon dioxide
    • Nitrogen
    • Oxygen

  3. How do you test for hydrogen gas?

    • The gas is bubbled through clear limewater, which turns it cloudy white
    • A glowing splint held at the mouth of the tube relights as the gas burns
    • A lit splint held at the mouth of the tube gives a squeaky pop
    • Damp blue litmus paper held in the gas turns red, showing an acid is present

  4. Magnesium reacts with hydrochloric acid to make magnesium chloride. What else is made?

    • Chlorine gas
    • Oxygen gas
    • Water vapour only
    • Hydrogen gas

  5. Which two words name the salt made when zinc reacts with hydrochloric acid?

    • Zinc sulfate
    • Zinc nitrate
    • Zinc chloride
    • Zinc carbonate

  6. Which salt is formed when magnesium reacts with sulfuric acid?

    • Magnesium chloride
    • Magnesium carbonate
    • Magnesium nitrate
    • Magnesium sulfate

  7. Iron filings are added to dilute hydrochloric acid. Which result is correct?

    • Carbon dioxide gas is given off steadily as the iron dissolves
    • A salt called iron oxide and oxygen gas form, as the iron burns
    • Only water and a pale iron solution form, with no gas at all
    • A salt called iron chloride and hydrogen gas form

  8. A student adds dilute sulfuric acid to a piece of copper. What is most likely to happen?

    • Vigorous bubbling of hydrogen, because copper is more reactive than hydrogen
    • Carbon dioxide is released, because copper reacts with acid to form a carbonate
    • The copper dissolves quickly to make a blue solution, releasing oxygen gas
    • Little or no reaction, because copper is below hydrogen in the reactivity series

  9. Which metal reacts fastest with the same dilute acid, using pieces of equal size and mass?

    • Magnesium
    • Tungsten
    • Platinum
    • Palladium

  10. Which change would make zinc react with acid more quickly?

    • Cooling the acid in an ice bath
    • Using one large lump of zinc instead of powder
    • Using zinc powder instead of one large lump
    • Diluting the acid with more water

  11. Which statement about the reaction of acid with metal is correct?

    • The hydrogen produced is a liquid at room temperature
    • The acid is used up and the metal becomes a gas
    • The metal is used up as its salt forms
    • The reaction only happens with gold and silver

  12. Write the word equation for zinc reacting with hydrochloric acid.

    • Zinc + hydrochloric acid gives zinc chloride + oxygen
    • Zinc + hydrochloric acid gives zinc chloride + hydrogen
    • Zinc + hydrochloric acid gives zinc sulfate + carbon dioxide
    • Zinc + hydrochloric acid gives zinc oxide + water

  13. A metal is placed in acid and no gas bubbles appear. What does this suggest?

    • The metal has dissolved into hydrogen gas
    • The metal is more reactive than the acid itself
    • The acid has turned into a salt already
    • The metal is less reactive than hydrogen

  14. Why is the gas made in an acid-metal reaction collected over water rather than in air?

    • Water stops the acid from reacting with the metal, so less gas is lost
    • Hydrogen reacts with water to form an acid, which would damage the apparatus
    • Air would make the hydrogen turn into a salt on the surface of the tube
    • Hydrogen is not very soluble in water, so it can be collected cleanly

  15. Which pair correctly matches a metal and the salt it gives with dilute hydrochloric acid?

    • Magnesium and magnesium nitrate
    • Calcium and calcium chloride
    • Copper and copper carbonate
    • Potassium and potassium sulfate

  16. A magnesium ribbon is dropped into acid and fizzes strongly. Which product is formed alongside the salt?

    • Carbon dioxide
    • Nitrogen
    • Hydrogen
    • Oxygen

  17. Which property of the reaction shows that the acid is being used up?

    • The acid's pH stays the same throughout, since the metal is unchanged
    • The acid's pH falls to zero as more and more hydrogen is produced
    • The acid's pH rises towards neutral as the metal reacts
    • The acid turns from clear to bright red as the metal is used up

  18. Which statement about reactivity and acid reactions is correct?

    • Only metals that are liquids at room temperature can react with acid
    • More reactive metals react faster with dilute acid than less reactive ones
    • Reactivity has no effect on how quickly gas bubbles form in the mixture
    • Less reactive metals react faster with dilute acid than more reactive ones

  19. What is the general word equation for a metal reacting with an acid?

    • Metal + acid gives metal oxide + hydrogen
    • Metal + acid gives water + carbon dioxide
    • Metal + acid gives salt + hydrogen
    • Metal + acid gives salt + oxygen

  20. A student wants to make a dry sample of magnesium chloride from its solution. Which method is most suitable?

    • Use chromatography to separate it
    • Filter the solution through paper
    • Add more acid until the solution fizzes and stops
    • Evaporate the solution to dryness

All KS3 Chemistry quizzes