Chemistry Unit 1 Revision Questions

Revision Questions based on the Edexcel GCSE chemistry specification for 2014.

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C1: Chemistry in our World
Topic 1 ­ The Earth's sea and atmosphere
1. What produced the gases that formed the early atmosphere?
2. What did the early atmosphere contain?
3. Why are there different sources of information about the atmosphere? Why does
this make it difficult to be precise…

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2. What are indigestion remedies?
3. How can you investigate the effectiveness of different indigestion remedies?
4. What are acids neutralised by?
5. What does hydrochloric acid, nitric acid and sulphuric acid produce?
6. What is electrolysis?
7. How can you investigate electrolysis of dilute hydrochloric acid?
8. What is…

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7. What is the chemical test for carbon dioxide?
8. What can the incomplete combustion of hydrocarbons produce?
9. How does carbon monoxide behave?
10. What are the problems caused by an incomplete combustion?
11. Why do impurities in some hydrocarbon fuels result in the production of sulphur


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