Question

how can thermal energy be transferred in or out of a system?
select the correct answer(s).
there is more energy in the reactants than the products. it is othermic.
there is more energy in the reactants than the products. it is endothermic.
there is less energy in the reactants than the products. it is exothermic.
heat exits the system. it is exothermic.
there is less energy in the reactants than the products. it is endothermic.
heat enters the system. it is endothermic.

Explanation:

• Exothermic processes: Thermal energy exits the system, so reactants have more energy than products.
• Endothermic processes: Thermal energy enters the system, so reactants have less energy than products.

Answer:

There is more energy in the reactants than the products. It is exothermic.
Heat exits the system. It is exothermic.
There is less energy in the reactants than the products. It is endothermic.
Heat enters the system. It is endothermic.