Across
- 4. energy require to break original bonds is less than the energy released
- 6. ions atoms and molecules must collide to react
- 8. used to slow down the rates of chemical reactions
- 9. two or more substances combine to form another substance
- 10. is a change in which one or more substances are converted into new substances
Down
- 1. the rate at which reactants change into products
- 2. one that can occur both forward and reverse directions
- 3. a substance that speeds up chemical reactions
- 5. state of balance
- 7. the final substance of a chemical reaction