C2.5 Exothermic and endothermic reactions Flashcards
1
Q
What is an exothermic reaction?
A
A reaction that transfers energy to the surroundings
2
Q
Give three examples of exothermic reactions
A
- Combustion
- Many oxidation reactions
- Neutralisation
3
Q
What are two uses for exothermic reactions?
A
- Self-heating cans
- Hand warmers
4
Q
What is an endothermic reaction?
A
A reaction that takes in energy from the surroundings
5
Q
Give an example of an endothermic reaction and a use
A
- Thermal decomposition
- Some sports injury packs
6
Q
“The energy transferred in the exothermic direction of the equation is less than in the endothermic direction.”
True or False
A
False, the same amount of energy is transferred in each case/direction
7
Q
For some chemical reactions to occur, energy must be supplied. What type of reaction is this?
A
Endothermic
