Energy Changes Flashcards
1
Q
What is an exothermic reaction?
A
One which transfers energy to the surroundings usually by heating. This is shown by a rise in temperature.
2
Q
What is an endothermic reaction?
A
One which takes in energy from the surroundings. This is shown by a fall in temperature.
3
Q
Give some examples of an exothermic reactions.
A
- Burning fuels
- Combustion
- Neutralisation reactions
- Oxidation reactions
4
Q
Give 2 examples of items that use exothermic reactions.
A
- Hand warmers
- Self heating cans
5
Q
Give some examples of endothermic reactions.
A
- Citric acid ans sodium hydrogencarbonate
- Thermal decomposition
6
Q
Give an example of an item that uses an endothermic reaction.
A
Sports injury packs.
