Matter

Matter anything that has mass and takes up space (volume). can be a solid, liquid, gas or plasma.

Mass the amount of matter in an object measured in grams *Note: mass is different from weight. Weight depends on gravity and can change.*

Volume the amount of space an object takes up measured in milliliters (mL) or cubic centimeters (cm3)

Density the amount of mass in a given volume (how packed together or spread out the particles are in an object) Measured in g/mL or g/cm3 Less dense More dense

Atom the smallest unit of matter From the Greek: atomos “a” means not “tomos” means cuttable Three parts to the atom: proton and neutron (in the nucleus) and electron