C2.5 Exothermic and Endothermic Reactions Flashcards
1
Q
When a chemical reaction occurs, what is transferred to or from the surroundings?
A
Energy
2
Q
What is an exothermic reaction?
A
One which transfers energy to the surroundings causing a rise in temperature
3
Q
What are three examples of exothermic reactions?
A
Burning fuels, neutralisation reactions and many oxidations
4
Q
What are uses of exothermic reactions? (2)
A
Hand warmers and self-heating cans of hot chocolate and coffee
5
Q
What is an endothermic reaction?
A
One which takes in energy from the surroundings, causing a decrease in temperature
6
Q
What is a use of an endothermic reaction?
A
A sports injury (a cold pack)
