Question

What change takes place when a liquid absorbs heat energy without increasing its temperature? A. the pressure increases B. it vaporizes C. it solidifies D. the volume decreases

Answer 1

Answer: Option (B) is the correct answer.

Explanation:

When a substance absorbs energy then molecules start to move from their initial place and they tend to slide past each other. As a result, phase change occurs.

A reaction in which reactants absorb energy are known as endothermic reactions. In this case, energy of products is more than reactants.

Therefore, when a liquid absorbs energy without increasing its temperature like ice melts at room temperature, then the liquid will evaporate.

Answer 2

B.

When water is heated, it evaporates.