Compare how heat flows during exothermic reactions and endothermic reactions. explain what happens to the thermal energy of the surroundings in each case.

(re-write in your own words)Did your answer include these concepts?

Heat flows from the reacting substances out to the surroundings in an exothermic reaction.

The thermal energy of the surroundings increases as a result of an exothermic reaction.

Heat flows in to the reacting substances from the surroundings in an endothermic reaction.

The thermal energy of the surroundings decreases as a result of an endothermic reaction.

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >