Exothermic and Endothermic reactions

Question 1

Endothermic

Answer 1

When energy or heat is taken from the surroundings.
It enters the substance. Often cause the temperature of the surroundings to decrease.
E.g.photosynthesis, ice melting to water, baking a cake.

Question 2

Exothermic

Answer 2

When energy or heat is released into the surroundings.
It exits the substance. Therefore products will have less energy than the reactants.
E.g. Match burning, rusting iron, body burning sugars, burning gas on a stove.