P1. Energy Changes

Question 1

Exothermic Reactions

Answer 1

. Rise in temperature
. Heat energy is transferred to the surroundings
. Gives out heat eg hand warmers, self-heating cans (
for coffee)

Question 2

Endothermic Reactions

Answer 2

. Fall in temperature
. Heat energy is transferred from the surroundings to
the chemicals
. Takes in Heat energy eg sports injury packs