Download 7F Chemical Reactions

7F Chemical Reactions
Across
2. one of the sides of the fire triangle
4. protection for the eyes
5. chemical compounds containing carbon and oxygen
7. substance used to test for presence of carbon dioxide
9. this is produced when a substance burns in air
11. 'tell tale' sign of a chemical reaction
Down
1. eaten away usually by acid
2. gas made when acid is added to metal
3. energy rich substance formed over millions of years
from dead organisms
6. gas given off when acid is added to carbonates
8. new substance made from a chemical reaction
10. a chemical reaction that is difficult to undo
7F Chemical Reactions
Across
2. one of the sides of the fire triangle
4. protection for the eyes
5. chemical compounds containing carbon and oxygen
7. substance used to test for presence of carbon dioxide
9. this is produced when a substance burns in air
11. 'tell tale' sign of a chemical reaction
Down
1. eaten away usually by acid
2. gas made when acid is added to metal
3. energy rich substance formed over millions of years
from dead organisms
6. gas given off when acid is added to carbonates
8. new substance made from a chemical reaction
10. a chemical reaction that is difficult to undo