Energy Transfer in Reactions Flashcards
1
Q
What is an exothermic reaction?
A
Heat energy transferred to surroundings so temperature rises.
2
Q
What is an endothermic reaction?
A
Heat energy taken in from the surroundings so the temperature falls.
3
Q
Give an example of an exothermic reaction
A
Combustion
Neutralisation
Oxidation
4
Q
Give an example of an endothermic reaction?
A
Thermal decomposition
5
Q
What are exothermic reactions used in?
A
Handwarmers
Self heating mugs
6
Q
What are endothermic reactions used in?
A
Ice packs for sports injuries
7
Q
Give an example of a reversible reaction that can be endothermic and exothermic
A
Hydrated copper sulphate
8
Q
What happens in a reversible exothermic and endothermic reaction?
A
Energy absorbed by the endothermic reaction is equal to the energy released in the exothermic reaction
