Item AM054004: The molecules of liquid water in a cup would not stop moving even if the water became a solid, a gas, or if the liquid became still.

In a cup of liquid water, when would the water molecules stop moving?

  1. The molecules would stop moving if the liquid water in the cup became a solid.
  2. The molecules would stop moving if the liquid water in the cup became a gas.
  3. The molecules would stop moving if the liquid water in the cup became still.
  4. The molecules would not stop moving in the cup of liquid water.