The amount of heat in the air makes the molecules move quickly and push against each other.

When so affected, its molecules all moved forward, taking the ship with them.

This means the molecules move about independently of each other.

Each molecule moves the one next to it in turn.

The molecules can continually move with respect to each other.

Around us we saw molecules moving faster as their temperature increased.

In a gas the molecules move freely and are independent of each other.

The molecules move in such a way that the pressure is the same at every point on the inside walls of the container.

It's merely a change in the way atoms or molecules move.

All we have to do is cause the molecules to move in a direction opposite to the rotation.