Across
- 3. A collision between reactant particles that has enough energy for a reaction to happen.
- 4. The total area of an object, for example the area of a skydiver's body facing the air as they fall, or the area of a car tyre that touches the road.
- 5. The sequence of reactions needed to produce a desired product from a particular set of raw materials.
- 6. A substance that reacts together with another substance to form products during a chemical reaction.
- 8. The minimum amount of energy that colliding particles must have for them to react.
- 10. A substance that changes the rate of a chemical reaction without being changed by the reaction itself.
Down
- 1. A collision between reactant particles that has enough energy for a reaction to happen.
- 2. A device used for measuring temperature.
- 7. Reaction in which energy is given out to the surroundings. The surroundings then have more energy than they started with so the temperature increases.
- 9. How quickly a chemical is used up or produced.