unit 5 revision Flashcards
(7 cards)
1
Q
What is an exothermic energy transfer?
A
transfer to the surroundings
2
Q
What is an endothermic energy transfer?
A
transfer from the surroundings
3
Q
What is a reaction profile?
A
diagram showing how the energy changes in a reaction
4
Q
What is the activation energy?
A
minimum amount of energy required before a collision will result in a reaction
5
Q
What is bond energy?
A
the energy required to break a bond or the energy released when a bond is formed
6
Q
In terms of bond breaking and making, what is an exothermic reaction?
A
less energy is required to break the bonds than is released when making the bonds
7
Q
In terms of bond breaking and making, what is an endothermic reaction?
A
more energy is required to break the bonds than is released when making the bonds
