energy and chemical change Flashcards
(5 cards)
1
Q
heat of reaction
A
the energy absorbed or released per mole in a chemical reaction
2
Q
exothermic reaction
A
reactions that release energy
3
Q
endothermic reaction
A
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
