Across
- 4. In a chemical reaction the original substances present
- 5. A process where a new substance is formed
- 7. Becoming liquefied by heat is called ____________
- 8. A process that occurs when iron comes in contact with moist air
Down
- 1. A process where the molecules remain the same before and after the reaction
- 2. The new substance formed in a chemical reaction
- 3. Increase of size is called ______________
- 6. A substance that does not undergo any changes in a chemical reaction