Across
- 4. Global warming can lead to this
- 10. Combustion is when something reacts with …
- 11. Alkane with two carbons
- 12. The suffix for alkanes (without the hyphen)
- 13. Alkane with six carbons
- 14. Coal has formed mainly from …
- 16. Alkane with four carbons
- 17. Gas, oil and coal are …
- 18. Alkane with three carbons
- 20. This effect keeps Earth warm and habitable
- 21. Oil and gas have formed mainly from …
- 22. Compounds contain a covalent carbon–hydrogen or carbon–carbon bond
- 24. The most important greenhouse gas
- 25. When an alkane reacts with oxygen, the products are carbon dioxide and …
Down
- 1. The most common element in Earth’s atmosphere
- 2. The second most important greenhouse gas
- 3. The chemical process of burning
- 5. Organic compounds made up entirely of carbon and hydrogen atoms
- 6. Alkane with one carbon
- 7. Alkane with five carbons
- 8. The burning of fossil fuels, farming and industry releases greenhouse …
- 9. How many percent of Earth’s atmosphere is oxygen?
- 15. The process of extracting pure substances from a liquid mixture
- 19. Alkane with seven carbons
- 21. Alkane with eight carbons
- 23. How many of the alkanes are gases at room temperature?