Across
- 4. a substance that takes part in and undergoes change during a reaction
- 5. is also known as bond energy
- 6. an ___ indicates a chemical reaction
- 9. no atoms are gained or lost during any reaction
- 10. there is a net release of energy
Down
- 1. one or more new compounds are formed as a result of the rearrangement of atoms
- 2. there is a net absorption of energy
- 3. ___ is difficult to reverse, but not impossible
- 7. are the species formed from chemical reactions
- 8. is the amount of energy required to pull two bonded amounts apart