Across
- 3. Something that releases energy
- 4. Chemical reaction causing a rearrangement of atoms
- 8. Absorbs heat
- 10. Slows down chemical change
- 11. Any substance that undergoes a chemical change
Down
- 1. Speeds up the chemical reaction
- 2. Mass is neither created of destroyed
- 5. Are the biological substance that act as catalysts and help complex reactions occur everywhere in life
- 6. Equally balanced state
- 7. A substance obtained from another substance through chemical change
- 9. Releases of absorbs energy