5 Chemical energetics Flashcards
1
Q
exothermic reaction
A
transfers thermal energy to the surroundings leading to the increase of temperature of the surroundings
2
Q
endothermic reaction
A
takes in thermal energy from the surroundings leading to a decrease of temperature of the surroundings
3
Q
enthalpy
A
transfer of thermal energy during a reaction
4
Q
what is the transfer of thermal energy during a reaction called?
A
enthalpy change
5
Q
enthalpy change in exothermic
A
negative
6
Q
enthalpy change in endothermic
A
positive
7
Q
activation energy Ea
A
minimum energy that colliding particles must have to react
8
Q
bond breaking
A
endothermic
9
Q
bond making
A
exothermic
