States of Matter and Diffusion Quiz

The ‘skin’ of the balloon has millions of tiny _______ in it. The air molecules are small enough to pass through these holes and so the balloon deflates slowly.

When a pin is stuck in an inflated balloon, it deflates quickly because a larger hole has been made through which the ________ escape.

The spreading of one substance through another is called _______

The three physical states of matter are ______

______ gas has a specific smell which spreads through the air.

A _____ has a well-defined shape.