Mass, Volume, and Density

Mass, volume, and density are important qualities of matter. Here are some good web resources to learn more… (more…)

Molecules

Molecules make up our world… so learn more about these combinations of atoms… (more…)

Phases of Matter

Matter exists in different phases at different temperatures and pressures. From your own experience, you know that watter can exist as a gas (steam), a liquid (water), and a solid (ice) at different temperatures. Learn more about the phases of matter: (more…)

Atoms

Atoms are basic building blocks of matter. You…me…your chair…the ground…the air…everything is made up of molecules, and molecules are made of atoms joined together. Learn more about these tiny particles. (more…)