Across
- 4. A change that produces one or more new substance
- 6. when energy of a reaction is absorbed
- 7. the new substance that is formed after the reaction
- 8. substances that undergo the chemical change
- 10. when energy of a reaction is released as heat
Down
- 1. when one element replaces another in a compound
- 2. when two or more reactants combine to form a compound
- 3. increases the reaction rate by lowering the energy needed
- 5. occurs when a chemical reaction breaks down a compound into smaller parts
- 7. Alters the form or appearance but does not change into a new substance
- 9. the amount of substance in a given volume