Across
- 2. Arrangement of particles during a collision
- 4. Area Exposed area where particles can collide
- 5. Substances formed as a result of a chemical reaction
- 8. energy Energy of motion of particles
- 11. A biological catalyst
- 12. Substance formed after reactants react
- 13. Energy Energy needed to start a chemical reaction
- 14. Theory A theory stating that particles must collide to react
Down
- 1. Measure of how hot or cold a substance is
- 3. Collison A collision that results in a chemical reaction
- 6. Substances present at the start of a chemical reaction
- 7. A substance that increases reaction rate without being used up
- 9. Amount of matter in a given volume
- 10. rate Speed at which a chemical reaction occurs