Across
- 4. smallest particle in a chemical element
- 5. A higher _________ of a reactant usually increases the reaction rate
- 7. It is produced in the liver, and is found in nearly all animal cells,especially in blood.
- 8. Many chemical reactions occur in living things.These reactions need biological catalysts called
Down
- 1. affects rate of reaction, especially in gases
- 2. A substance participating in a chemical reaction
- 3. when risen molecules bounce around more
- 5. used in industry to control the speed of reactions and to reduce the costs of producing chemicals
- 6. an explosion has a ____ reaction rate