Question

1. match the correct term to complete the sentence.

a(n) __________ reaction releases heat into the surroundings during a chemical reaction.
choices
endergonic
endothermic
exergonic
exothermic

1. match the correct term to complete the sentence.

a(n) __________ reaction absorbs energy during a chemical reaction.
choices
exergonic
endothermic
endergonic
exothermic

Explanation:

Sub - Question 1

To solve this, we recall the definitions of the terms:

• Endergonic: Requires energy input (not about heat release).
• Endothermic: Absorbs heat (not releasing heat).
• Exergonic: Releases energy (general, not specific to heat).
• Exothermic: Releases heat into the surroundings during a chemical reaction. So the correct term for a reaction that releases heat is exothermic.

Recall the definitions:

• Exergonic: Releases energy (not absorbing).
• Endothermic: Absorbs heat (a type of energy absorption).
• Endergonic: Requires energy input (absorbs energy in the form of work/chemical potential).
• Exothermic: Releases heat (not absorbing). A reaction that absorbs energy (in general, or specifically heat as endothermic) can be described. But among the options, endergonic (absorbs energy for non - heat related or general energy) and endothermic (absorbs heat). However, the question says "absorbs energy" in a chemical reaction. Endergonic reactions absorb energy (usually in the form of free energy) and endothermic absorbs heat (a form of energy). But looking at the options, endergonic is about energy (free energy) absorption and endothermic about heat. But the most appropriate here: endergonic reactions are those that absorb energy (ΔG>0), endothermic is heat absorption. But the question's choices: exergonic (releases), endothermic (heat absorb), endergonic (energy absorb), exothermic (heat release). So for a reaction that absorbs energy (general), endergonic. But also endothermic absorbs heat (a form of energy). Wait, the question is "absorbs energy during a chemical reaction". Endergonic reactions have a positive change in Gibbs free energy, meaning they absorb free energy. Endothermic reactions absorb heat (a form of energy). But let's check the options. The choices are exergonic, endothermic, endergonic, exothermic. So the reaction that absorbs energy (in the sense of requiring energy, like endergonic) or absorbs heat (endothermic). But the term for a reaction that absorbs energy (not specifically heat) is endergonic. However, endothermic is heat absorption. But the question is "absorbs energy" — endergonic is about energy (free energy) absorption. So the correct term is endergonic (or endothermic, but endergonic is more about general energy). Wait, let's re - check:

Endergonic: ΔG>0, non - spontaneous, absorbs free energy.

Endothermic: ΔH>0, absorbs heat (a form of energy).

The question says "absorbs energy" — both endergonic and endothermic absorb energy (in different forms). But the options include both. Wait, the choices for question 2 are exergonic, endothermic, endergonic, exothermic. So we need to pick the best. The reaction that absorbs energy (in the chemical reaction context, endergonic is about free energy, endothermic about heat). But the question is "absorbs energy" — endergonic is a better fit for general energy absorption, but endothermic is heat. Wait, maybe the question is using "energy" in a general sense. So the correct term is endergonic (or endothermic). Wait, let's see the definitions again.

Wait, maybe the question has a typo, but among the options, for a reaction that absorbs energy (not releases), exergonic and exothermic are out. So between endothermic and endergonic. Endergonic reactions absorb free energy (energy in the form of chemical potential), endothermic absorbs heat. If the question says "absorbs energy", endergonic is more about energy (free energy) absorption. So the correct term is endergonic. But also endothermic is heat absorption. Wait, maybe the intended answer is endothermic? No, endothermic is heat. Wait, let's check standard definitions:

• Exothermic: Releases heat (to surroundings).

• Endothermic: Absorbs heat (from surroundings).

• Exergonic: Releases free energy (ΔG<0).

• Endergonic: Absorbs free energy (ΔG>0).

So the reaction that absorbs energy (free energy) is endergonic. The reaction that absorbs heat is endothermic. The question is "absorbs ener…

Answer:

exothermic

Sub - Question 2