Across
- 5. reaction the reaction in which heat is released
- 6. change substance undergoes changes only in its physical properties
- 8. the process of depositing a layer of zinc on iron
- 9. reaction is a reaction in which two or more substances combine to form a single substance
Down
- 1. original substances participating in a chemical reaction
- 2. reaction is an another word for chemical change
- 3. reaction the reaction in which heat is absorbed
- 4. reaction is one in which a compound breaks up into two or more substances
- 7. the new substance formed in a chemical reaction