Across
- 4. speeds up chemical reaction
- 5. Group 0 elements
- 7. The speed at which the amount of reactants decreases or the amount of products increases
- 8. is a metal
- 9. when particles collide
Down
- 1. Biological catalysts, usually consisting of proteins
- 2. group 7 elements
- 3. Force exerted over an area.
- 4. 7 electrons in outer shell
- 6. orange brown colour