Is vacuum matter? What are ten things...

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Is vacuum matter? What are ten things that are not matter?

Vacuum, by definition, is the absence of matter. Matter, of course, is something that has mass and occupies space. Here is my top ten list of "Things That Are Not Matter":

1.		Light

2.		Sound

3.		Heat

4.		Energy

5.		Gravity

6.		Time

7.		A Rainbow

8.		Love

9.		Happiness

10.		A really good joke

Author:

Steve Gagnon, Science Education Specialist (Other answers by Steve Gagnon)

What is a vacuum? Is it matter?

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