Across
- 1. It is the smallest type of stale particle
- 3. It is a reaction that takes in heat
- 5. It can be used for fertiliser but is also in the air
- 8. It is a metallic element and it rusts
- 9. This happens when Iron connects with water
- 10. It makes up 21% of the earths air
- 11. It is a gas we release when we breath
- 13. It can absorb and release infared radiation
- 17. It is a reaction that releases heat
- 19. It is made up of 2 hydrogen atoms and 1 oxygen atom
- 20. It is the fancy name for burning
Down
- 2. It is the name for the shape that is often used to explain the things needed for a fire
- 4. It can be separated by a physical process
- 6. Nox is its common abriviation
- 7. It has a posotive or negative charge
- 12. Sox is its common abriviation
- 13. It is the name of the process which people do when they coat Iron objects in Zinc to stop rust
- 14. It is two atoms chemically joined together
- 15. It is used in light bulbs and the air
- 16. It is made up of only one tupe of atom
- 18. Iron Sulphile is an example of this
- 20. A metal that goes green as it corrods