2.4 Chemicals and their reactions (energy) Flashcards
1
Q
Define endothermic reaction.
A
Reaction that takes in heat/ temp falls in surroundings
2
Q
Define exothermic reaction.
A
Reaction that gives out heat/temp rises in surroundings
3
Q
Define activation energy.
A
Minimum energy needed to start a reaction
4
Q
What is combustion? Is it exo or endothermic?
A
Burning in oxygen, exothermic
5
Q
Look at energy profile in book
A
6
Q
Does bond breaking require or release energy?
A
Requires
7
Q
Does bond making require or release energy?
A
Release
8
Q
How do you calculate the energy change of a reaction?
A
energy of bonds broken - energy of bonds made
9
Q
A
