endothermic and exothermic reactions Flashcards
(6 cards)
1
Q
What is an exothermic reaction?
A
Releases energy → temperature increases
2
Q
What happens to energy in exothermic reactions?
A
Potential energy decreases, kinetic increases
3
Q
What is an endothermic reaction?
A
Takes in energy → temperature decreases
4
Q
What happens to energy in endothermic reactions?
A
Potential energy increases, kinetic decreases
5
Q
Practical: How to measure energy change in neutralisation?
A
React acid + alkali, measure max temp, increase alkali volume — temp rises then falls
6
Q
What does the crossover point on the graph show?
A
Volume needed to neutralise
