Chemical Energy Flashcards
1
Q
What does hess’s law state?
A
The enthalpy change in converting reactants into products is the same regardless of the route.
2
Q
What is enthalpy?
A
Enthalpy is a measure of the stored chemical potential in a substance.
3
Q
What is enthalpy measured in?
A
Kj
4
Q
What letter symbolises enthalpy?
A
H
5
Q
What are exothermic reactions?
A
Exothermic reaction are chemical changes that give out heat to the surroundings.
6
Q
What are endothermic reactions?
A
Endothermic reactions are chemical reactions that take in heat energy from the surroundings and the heat energy is changed into chemical energy.
