Across
- 4. The lowest amount of energy particles need to react
- 5. Particles must have enough of this when they collide
- 7. Increasing this gives reactants more energy
- 8. Increasing this means there will be more reactant to react
Down
- 1. Speeds up a reaction without being used up
- 2. How fast a chemical reaction is happening
- 3. Particles must ............. for a reaction to occur
- 6. Increasing the surface ......... speeds up the rate of reaction
- 9. reaction rate is calculated by dividing the change in mass by..........