energetics Flashcards
1
Q
give two examples of exothermic reactions
A
combustion of fuels
neutralisation reactions
2
Q
what energy change is associated with making bonds?
A
energy is released to make bonds - exothermic reaction
3
Q
what energy change is breaking bonds associated with?
A
energy is taken in to break bonds - an endothermic reaction
4
Q
give an example of an endothermic reaction
A
thermal decomposition
5
Q
define enthalpy change
A
energy change of a system at a constant pressure
