GCSE Chemistry – Metal carbonates

Last updated: 16/06/2020

WJEC GCSE Science – Chemistry higher Limestone GCSE Chemistry – Metal carbonates

Learning Objectives

-I can describe the trend in stabilities of metal carbonates and their thermal decomposition to produce oxides and carbon dioxide

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Question 1 of 25

1. Question
What reaction occurs when metal carbonates are heated?
- Thermal decomposition
- Neutralisation
- Displacement
- Disproportionation
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Question 2 of 25

2. Question
What product forms during the thermal decomposition of a metal carbonate?
- Metal oxide
- Metal hydroxide
- Metal hydride
- Metal sulfate
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Question 3 of 25

3. Question
What product forms during the thermal decomposition of a metal carbonate?
- Carbon dioxide
- Water
- Oxygen
- Hydrogen
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Question 4 of 25

4. Question
What product will form when sodium carbonate undergoes thermal decomposition?
- Sodium oxide
- Sodium hydroxide
- Sodium chloride
- Sodium hydride
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Question 5 of 25

5. Question
What product will form when lithium carbonate undergoes thermal decomposition?
- Lithium oxide
- Lithium hydroxide
- Lithium chloride
- Lithium hydride
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Question 6 of 25

6. Question
What product will form when potassium carbonate undergoes thermal decomposition?
- Potassium oxide
- Potassium hydroxide
- Potassium chloride
- Potassium hydride
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Question 7 of 25

7. Question
What does the difficulty of the decomposition of a metal carbonate depend on?
- Reactivity of the metal
- Amount of oxygen
- Concentration of solution
- Amount of pressure
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Question 8 of 25

8. Question
What does the difficulty of the decomposition of a metal carbonate depend on?
- Stability of the metal carbonate
- Stability of the oxygen
- Accessibility of oxygen
- Accessibility of carbon dioxide
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Question 9 of 25

9. Question
What can be used to compare the stability of metal carbonates?
- The reactivity series
- The periodic table
- The pH scale
- A thermometer
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Question 10 of 25

10. Question
What type of temperature will be needed to thermally decompose a very stable metal carbonate?
- High temperature
- Low temperature
- No temperature
- There is no relationship between the stability and the temperature
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Question 11 of 25

11. Question
What type of temperature will be needed to thermally decompose a very unstable metal carbonate?
- Low temperature
- High temperature
- No temperature
- There is no relationship between the stability and the temperature
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Question 12 of 25

12. Question
How stable will a metal carbonate be that contains a very reactive metal?
- Very stable
- Very unstable
- No stability
- There is no relationship between the stability and the reactivity of the metal
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Question 13 of 25

13. Question
How stable will a metal carbonate be that contains a very unreactive metal?
- Very unstable
- Very stable
- No stability
- There is no relationship between the stability and the reactivity of the metal
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Question 14 of 25

14. Question
What type of temperature will be needed to thermally decompose a metal carbonate that contains a very reactive metal?
- High temperature
- Low temperature
- No temperature
- There is no relationship between the reactivity of the metal and the temperature
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Question 15 of 25

15. Question
What type of temperature will be needed to thermally decompose a metal carbonate that contains a very unreactive metal?
- Low temperature
- High temperature
- No temperature
- There is no relationship between the reactivity of the metal and the temperature
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Question 16 of 25

16. Question
Which type of metals are at the top of the reactivity series?
- Most reactive
- Least reactive
- Most pressured
- Least pressured
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Question 17 of 25

17. Question
Which type of metals are at the bottom of the reactivity series?
- Least reactive
- Most reactive
- Most pressured
- Least pressured
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Question 18 of 25

18. Question
Which type of metal carbonates are at the top of the reactivity series?
- Most stable
- Least stable
- Most pressured
- Least pressured
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Question 19 of 25

19. Question
Which type of metal carbonates are at the bottom of the reactivity series?
- Least stable
- Most stable
- Most pressured
- Least pressured
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Question 20 of 25

20. Question
A test for what type of gas can be used to measure the stability of a metal carbonate?
- Carbon dioxide
- Nitrogen
- Oxygen
- Hydrogen
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Question 21 of 25

21. Question
What is needed to test for carbon dioxide gas?
- Limewater
- Sodium hydroxide
- Water
- Potassium hydroxide
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Question 22 of 25

22. Question
What is the observation for carbon dioxide gas?
- Limewater turns cloudy
- A pop when a lighted splint is applied
- A glowing splint relights
- Damp blue litmus paper turns white
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Question 23 of 25

23. Question
What is tested for in the limewater when measuring the stability of a metal carbonate during thermal decomposition?
- The rate at which the limewater turns milky
- The rate at which the limewater turns blue
- The rate at which the limewater turns orange
- The rate at which the limewater turns colourless
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Question 24 of 25

24. Question
Describe the relationship between the rate the limewater turns milky and the stability of the metal carbonate.
- The faster the limewater turns milky the less stable the metal carbonate is
- The faster the limewater turns milky the more stable the metal carbonate is
- The slower the limewater turns milky the less stable the metal carbonate is
- There is no relationship between the rate the limewater turns milky and the stability of the metal carbonate
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Question 25 of 25

25. Question
Describe the relationship between the rate the limewater turns milky and the stability of the metal carbonate.
- The slower the limewater turns milky the more stable the metal carbonate is
- The faster the limewater turns milky the more stable the metal carbonate is
- The slower the limewater turns milky the less stable the metal carbonate is
- There is no relationship between the rate the limewater turns milky and the stability of the metal carbonate
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