Across
- 2. The amount of heat energy given out or absorbed during a reaction.
- 4. Increases the rate of reaction by providing a different reaction pathway with a lower activation energy. They are not used up during the reaction.
- 7. A chemical reaction in which a more reactive element displaces a less reactive element from its compound.
- 8. Q=Energy (J), m=mass (kg), c=specific heat capacity (J/kgoC), ΔT=temperature change
- 9. The minimum amount of energy that particles must collide with to react.
- 10. The process used to measure the amount of heat energy released or absorbed during a chemical reaction.
- 11. Chemical reactions only occur when colliding particles collide with the correct orientation and with sufficient energy (activation energy).
- 12. The measure of the amount of product formed or reactant used over time. The units of rate of reaction may be given as g/s, cm3/s or mol/s.
Down
- 1. A reaction in which energy is transferred to the surroundings so the temperature of the surroundings increases. *[Bond making is an exothermic process.]
- 3. The reaction in which an acid and a base react together to form a salt and water.
- 5. A reaction in which energy is taken in from the surroundings so the temperature of the surroundings decreases. *[Bond breaking is an endothermic process.]
- 6. The energy change of a reaction which can be calculated from a calorimetry experiment as follows: