Across
- 8. reaction which releases heat energy
- 9. substance that is used in a chemical reaction
- 11. sign for this is two arrows pointing in opposite directions
- 12. variable that you change
Down
- 1. variable that you keep the same
- 2. substance that is made in a chemical reaction
- 3. reaction which takes in heat energy
- 4. energy that is required to start a reaction
- 5. you use this to weigh a substance
- 6. reaction between an acid and an alkali
- 7. you use this to measure the temperature
- 10. variable that you measure