ScienceForDummies: Matter and Energy

 Hello!

Today is about matter and energy, and the second week of the Physics series.

What is Matter?

Matter is a physical substance which occupies space and has mass, distinct from energy. Matter is physical, so it does not have a rational nor conscious nature, at least itself. The popular understanding is that there are three states of matter, which is true, though there are other things considered as states of matters, the most popular of which being plasma. Basically, matter is a physical object. But it says "distinct from energy". What is energy, then?

What is Energy?

Simply, energy is a capacity to do something, especially moving something else. Energy falls into two central categories: kinetic energy and potential energy. What is the difference between the two types? Kinetic energy is in movement, while potential energy is not used, but usable to work.

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