CHEMICAL CHANGE: ENERGY AND CHANGE Flashcards
1
Q
Heat of reaction (ΔH)
A
The energy absorbed or released in a chemical reaction.
2
Q
Exothermic reactions
A
Reactions that release energy. (ΔH < 0)
3
Q
Endothermic reactions
A
Reactions that absorb energy. (ΔH > 0)
4
Q
Reactions that absorb energy. (ΔH > 0)
A
The minimum energy needed for a reaction to take place.
5
Q
The minimum energy needed for a reaction to take place.
A
The unstable transition state from reactants to products.
