Across
- 5. This can increase and also decrease in a chemical reaction
- 6. this gas is made when fuels burn
- 11. this word applies to a chemical reaction because you can undo the change
- 12. this is the scientific word for burning
- 13. keep our eyes safe during experiments
Down
- 1. the acid we used in the lab, has the formula HCl
- 2. this gas is made from a reaction between metal and acid
- 3. this word means that you can change things back again
- 4. we can detect this change ONLY using our eyes
- 7. the equipment we used used for our chemical reactions
- 8. we notice this when a gas is made in a chemical reaction
- 9. this gas produces a squeeky pop when tested with a lit match
- 10. melting ice is an example of this type of change