Question

part d did the chemical reaction absorb or release energy? how do you know?

Explanation:

If the reaction causes the temperature of the surroundings to decrease, it is an endothermic reaction (absorbs energy). If it causes the temperature of the surroundings to increase, it is an exothermic reaction (releases energy). We can measure the temperature change of the surroundings during the reaction to determine this.

Answer:

If the temperature of the surroundings decreases during the chemical reaction, it absorbs energy (endothermic). If the temperature of the surroundings increases, it releases energy (exothermic). We can tell by measuring the temperature change of the surroundings.