Rate and Extent of Reactions Flashcards
1
Q
heat of reaction (ΔH)
A
The energy absorbed or released in a chemical
reaction.
2
Q
Define exothermic reactions
A
As reactions that release energy.
3
Q
Define endothermic reactions
A
As reactions that absorb energy.
4
Q
Activation Energy
A
The minimum energy needed for a reaction to take place.
5
Q
Activated Complex
A
The unstable transition state from reactants to products.
6
Q
Reaction rate
A
The change in concentration of reactants or products per unit time.
7
Q
catalyst
A
A substance that increases the rate of a chemical reaction without itself undergoing a permanent change.
