Topic 5 Flashcards
1
Q
What is an exothermic reaction ?
A
Transferes energy to the surroundings
2
Q
What are uses of exothermic reactions?
A
Hand warmers
Self heating cans e.g. for food or drink
3
Q
What is an endothermic reaction ?
A
Take in energy from the surroundings
4
Q
What is an example of an endothermic reaction ?
A
Thermal decompisition
5
Q
What is the peak on the energy profile called ?
A
The activation energy
6
Q
What are bond energies?
A
- When we break a chemical bond , this requires energy (endothermic)
- making bonds releases energy (exothermic)
- every chemical bond has a energy value , this tells us the energy required to break that bond
