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Year 9 Chemistry Test - Limestone

20 Questions
Chemistry Quizzes & Trivia

A Year 9 Chemistry Quiz

Questions and Answers
  • 1. 
    Slaked lime is a common name for which one of the following?
    • A. 

      Calcium carbonate

    • B. 

      Calcium oxide

    • C. 

      Calcium hydroxide

  • 2. 
    How do you produce calcium oxide from calcium carbonate?
    • A. 

      By heating it

    • B. 

      By adding water to it

    • C. 

      By neutralising excess acidity

  • 3. 
    Limestone is mostly made of what?
    • A. 

      Calcium oxide

    • B. 

      Calcium carbonate

    • C. 

      Calcium hydroxide

  • 4. 
    Water is one of the ingredients of concrete. What are the other ingredients?
    • A. 

      Clay, sand and crushed rock

    • B. 

      Soda, sand and crushed rock

    • C. 

      Cement, sand and crushed rock

  • 5. 
    What is an advantage of using concrete to make building foundations?
    • A. 

      It is strong when stretched.

    • B. 

      It is strong when squashed.

    • C. 

      It is worn away by acid rain.

  • 6. 
    What is a benefit of a limestone quarry?
    • A. 

      There is a lot of dust and noise.

    • B. 

      There is employment for local people.

    • C. 

      It causes acid rain.

  • 7. 
    Which of the following is a disadvantage of using glass for windows?
    • A. 

      It is transparent.

    • B. 

      It is tough and difficult to break.

    • C. 

      It can trap too much heat in a building in the summer.

  • 8. 
    Why can gold be found in the Earth's crust in its native state?
    • A. 

      Gold is more reactive than silver.

    • B. 

      Gold is very unreactive.

    • C. 

      Gold is very rare.

  • 9. 
    Why is aluminium extracted from aluminium ore by electrolysis? 
    • A. 

      Aluminium is more reactive than carbon.

    • B. 

      Aluminium is less reactive than carbon.

    • C. 

      Aluminium is an expensive metal.

  • 10. 
    Why is iron extracted from iron ore by reduction with carbon or carbon monoxide? 
    • A. 

      Iron is more reactive than carbon.

    • B. 

      Iron is less reactive than carbon.

    • C. 

      Iron is a cheap metal.

  • 11. 
    Which properties make aluminium suitable for overhead mains electricity cables? 
    • A. 

      It has a low density and is a good conductor of electricity.

    • B. 

      It is shiny and is a good conductor of heat.

    • C. 

      It is a good conductor of electricity and heat.

  • 12. 
    What happens to iron oxide in a blast furnace? 
    • A. 

      It is oxidised to form iron.

    • B. 

      It is electrolysed to form iron.

    • C. 

      It is reduced to form iron.

  • 13. 
    In comparison with steel, what is pure iron like? 
    • A. 

      Harder

    • B. 

      Magnetic

    • C. 

      Softer

  • 14. 
    What is the percentage of iron in the iron from a blast furnace? 
    • A. 

      100%

    • B. 

      96%

    • C. 

      4%

  • 15. 
    Which type of steel is likely to be used for making cutlery? 
    • A. 

      Low carbon steel

    • B. 

      High carbon steel

    • C. 

      Stainless steel

  • 16. 
    Why are alloys likely to be harder than pure metals? 
    • A. 

      Because layers of atoms can slide over each other easily.

    • B. 

      Because layers of atoms cannot slide over each other easily.

    • C. 

      Because their atoms are denser and harder than those of pure metals.

  • 17. 
    Transition metals are like other metals in what ways?
    • A. 

      They are dull.

    • B. 

      They are good conductors of electricity.

    • C. 

      They are on the right hand side of the periodic table.

  • 18. 
    What process is used to purify copper?
    • A. 

      Electrolysis

    • B. 

      Filtration

    • C. 

      Reduction in a blast furnace

  • 19. 
    Why does aluminium not corrode quickly?
    • A. 

      It is an unreactive metal.

    • B. 

      It has a thin layer of aluminium oxide on its surface.

    • C. 

      It reacts with oxygen but not with water.

  • 20. 
    Why is titanium expensive to extract from its ore?
    • A. 

      It resists corrosion.

    • B. 

      Several stages are involved.

    • C. 

      Its ore is rare.

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