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Science 8 · Unit 8: Chemical reactions · Cambridge Lower Secondary Science Stage 8

8.4 Reactions of metals with water

17 questions · e.g. What is the word equation for calcium and water?

Practice

Questions

  1. 1. Put these in order of reactivity with water, most reactive first - zinc, copper, potassium, magnesium.

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  2. 2. What is the word equation for potassium and water?

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  3. 3. Name a metal that reacts with water like potassium.

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  4. 4. Why is copper used for roofs and pipes but magnesium is not?

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  5. 5. What is the word equation for calcium and water?

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  6. 6. Which gas is given off when metals react with water or steam?

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  7. 7. What is the word equation for magnesium and steam?

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  8. 8. How do you test for hydrogen?

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  9. 9. Which metal reacts only with steam, not cold water?

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  10. 10. Which metal does not react with water or steam?

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  11. 11. What would happen if water pipes were made of iron?

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  12. 12. How could you collect hydrogen gas given off when calcium reacts with water?

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  13. 13. Why is potassium stored under oil?

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  14. 14. What colour does a solution of a metal hydroxide turn universal indicator?

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  15. 15. Potassium is dropped into water. Why does the gas catch fire?

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  16. 16. What is the word equation for sodium and water?

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  17. 17. Why does magnesium react more vigorously with steam than with cold water?

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