Across
- 2. when exothermic reaction occurs
- 4. Carbon+Oxygen
- 6. sweets is endothermic reaction
- 8. processes give in heat
- 9. CalciumOxide+Water
- 11. is an exothermic
- 13. calcium oxide+water
- 14. reacts with water or acids, heat energy is given out
- 15. given out when metal reacts with water or acid
- 17. potassium+chlorine
- 20. substance that forms when ice melts
- 21. Reaction where substance reacts with oxygen
Down
- 1. when endothermic reaction takes place
- 3. substance that forms when water evaporates
- 5. Element that takes up 20% of the air
- 7. processes give out heat
- 10. substance that combines with and oxygen
- 12. is another term for burning
- 13. formula of carbon dioxide
- 16. process temperature decreases
- 18. is a reaction in which substance combines with oxygen
- 19. Magnesium+Oxygen