Across
- 5. an example of an endothermic reaction
- 7. the energy released when a chemical compound reacts to produce new compounds
- 10. a substance that participates in a chemical reaction
- 11. a word that describes a chemical reaction that you see everyday
Down
- 1. a chemical reaction in which energy is released to the surroundings as heat
- 2. a substance that forms in a chemical reaction
- 3. is released when forming bonds
- 4. occur when substances go through chemical changes to form new substances
- 6. when this is formed, it is a sign a chemical reaction has occurred
- 8. a chemical reaction that requires energy input
- 9. must be added to break bonds