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