Exothermic and Endothermic Reactions Flashcards
1
Q
What is an exothermic reaction?
A
A reaction that transfers energy to its surroundings which is shown by a rise in temperature.
2
Q
What three types of reaction are exothermic?
A
- Combustion
- Neutralisation
- Oxidation (mostly)
3
Q
What are two used of exothermic reactions?
A
- Hand warmers use the oxidation of iron in air to generate heat.
- Self-heating cans of hot chocolate and coffee rely on exothermic reactions between chemicals in their bases.
4
Q
What is an endothermic reaction?
A
A reaction that takes in energy from its surroundings which is shown by a drop in temperature.
5
Q
What is a type of reaction that is endothermic?
A
Thermal decomposition reactions
6
Q
What is a use of endothermic reactions?
A
Sports injury packs cool wounds.
7
Q
What is the rule about reversible reactions and energy transfer?
A
If the forwards reaction is exothermic, the backwards reaction will be endothermic.
