Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma). A pure gas may be made up of individual atoms (e.g. a noble gas ... en.wikipedia.org |
Do gases have mass and occupy space? Are gases matter? Can students answer these questions through simple observations? The answer to all of these ... cf.synergylearning.org |
Properties describe matter. A block of wood, milk, and air all have properties. All the material on earth is in three states-solid, liquid, and gas. The "state" of the ... www.nyu.edu |