Matter is the "stuff" that makes up the universe. Everything that has mass is matter. In normal everyday life we come across matter in three states, solid, liquid and gas.

It’s not always so easy to say definitely that a substance is a solid, liquid, or gas. Shaving cream seems to have an unusual state because it is a liquid soap with a lot of gas bubbles mixed in it.

This Simple Demo Explains Solid, Liquid, and Gas. What's going on with H 2 O molecules when they change from ice to water to vapor? By Jay Bennett Published: Aug 16, 2016 9:30 AM EDT.

Scientifically speaking, the gas keeps the same state forever, but the flame is burned out eventually. Also, although it is said that fire is the fourth state " plasma" following solid, liquid and ...

Like a liquid, a gas will take the shape of any container it is in and has no fixed shape. But unlike liquids and solids, gases can also change their size or volume.

Solid, liquid, gas … and something else? While most of us learn about just three states of matter in elementary school, physicists have discovered several exotic varieties that can exist under ...

Researchers report that the way a tissue's cells are arranged can serve as a fingerprint for the tissue's 'phase' -- whether it is more like a solid, liquid, or gas. For example, tumors that are ...