Does energy have mass? Does it have volume? Does matter have either of these things?

1.) In "traditional" quantum mechanics, energy does not have mass, but there is an equivalency. Equivalency does not have to be sameness. Everything can be explained that way, and a particle that can only exist at v = c does not have to have any rest mass. It can still have momentum at v = c.

2.) Matter has mass and occupies volume. Heat, light, and other forms of electromagnetic energy do not have measurable mass and can't be contained in a volume.

3.) Matter is all the “stuff” that exists in the universe. It has both mass and volume. Mass measures the amount of matter in a substance or an object. Volume measures the amount of space that a substance or an object takes up.

Explanation:

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