AQA GCSE Chemistry · 8462
Specification 4.5.1.1, 4.5.1.2, 4.6.2.2, 4.6.2.6 · Paper 1, Paper 2
A reaction that takes in energy from its surroundings, causing their temperature to decrease.
Revise: Exothermic and Endothermic ProcessesAn endothermic reaction takes in energy from its surroundings, so their temperature decreases. The reaction of citric acid with sodium hydrogencarbonate is an example: the temperature of the mixture falls. Thermal decomposition is another example.
- Revise: Reaction Profiles
A reaction that takes in energy from the surroundings, leaving the products at a higher energy level than the reactants.
- Revise: Energy in Reversible Reactions
A reaction that takes in energy transferred from the surroundings, usually causing their temperature to fall.
2 more notes
- Revise: Temperature Effects on Equilibrium
- Revise: Chemical Energetics and Kinetics
A reaction that transfers energy from the surroundings to the reacting substances.