4.2 Energy and Rates of Chemical Reaction Flashcards
1
Q
a chemical reaction in which heat is released to the surroundings
A
Exothermic reaction
2
Q
a chemical reaction that requires heat
A
Endothermic reaction
3
Q
the law that states that energy cannot be created or destroyed but can be changed from one to another.
A
Law of conservation of energy
4
Q
the minimum amount of energy required to start a chemical reaction
A
Activation energy
5
Q
a substance that slows down or stops a chemical reaction
A
Inhibitor
6
Q
a substances that changes the rate of a chemical reaction without used up or changed very much.
A
Catalyst
