Question

1. when water cools, but does not freeze, the molecules move____and take up____space. faster, more slower, more faster, less slower, less up, less

Explanation:

When water cools (but doesn't freeze), its temperature decreases. According to the kinetic - molecular theory, as temperature decreases, the kinetic energy of molecules decreases. Kinetic energy is related to the speed of molecules ($KE=\frac{1}{2}mv^{2}$, where $KE$ is kinetic energy, $m$ is mass, and $v$ is velocity). So, the molecules move slower. Also, as the molecules move slower, they get closer to each other (less space between them), so they take up less space.

Answer:

slower, less