For water to vaporize
A)energy must be supplied.
B)energy must be released.
C)hydrogen bonds are broken.
D)both energy must be supplied and hydrogen bonds broken.
E)both energy must be released and hydrogen bonds broken.

Question

Quizplus · Accepted Answer

Water molecules are held together by strong hydrogen bonds. To break these bonds and convert water into vapor, energy must be supplied. Therefore, option A is correct. Also, as the bonds break and the water molecules gain kinetic energy, they move further apart, and energy is required to overcome the intermolecular forces of attraction. Thus, hydrogen bonds are broken, and energy must be supplied, making option D the correct choice.

For Water to Vaporize