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WJEC GCSE Chemistry the Earth, atmosphere and resources overview quiz quiz

15questions. Pick an answer and you'll see why right away.

  1. Which two gases make up most of today's atmosphere?

  2. What was the early atmosphere mainly made of?

  3. Which process added oxygen to the atmosphere over time?

  4. How did much of the early carbon dioxide leave the atmosphere?

  5. Why does increasing carbon dioxide cause global warming?

  6. Which gas from incomplete combustion is toxic because it reduces the blood's oxygen capacity?

  7. Which pollutant gas mainly causes acid rain when sulfur-containing fuels burn?

  8. How are oxides of nitrogen formed in a car engine?

  9. Which stage of water treatment kills microbes?

  10. What is the chemical test for the presence of water?

  11. What is a saturated solution?

  12. What is limestone mainly made of?

  13. What is produced when calcium carbonate is heated strongly?

  14. What is formed when water is added to calcium oxide?

  15. What happens when carbon dioxide is bubbled through limewater?