States of Matter (Phases of Matter): Solids, Liquids, and Gases

Here we'll talk about states of matter, also known as "phases of matter." They are solid, liquid, and gas. We won't be talking about exotic phases of matter like plasma. Matter is anything that takes up space and has mass. It's "stuff." We'll examine the unique characteristics of each phase or state of matter, and look at the particles that make them up. We'll look to see whether they have a definite or indefinite shape and volume. We'll also look at whether they are compressible or not. At the particle level, we'll examine the layout of the particles, and how they move.