Table 1-4a Classification of Matter

Matter Anything with mass and volume.
Substance Matter with constant composition		Mixture Matter with variable composition
Element Substance made up of only one type of atom	Compound Two or more elements that are chemically combined	Heterogeneous Mixture Mixtures that are made up of more than one phase	Homogeneous Mixtures Also called solutions. Mixtures that are made up of only one phase
Examples - gold, silver, carbon, oxygen and hydrogen	Examples - water, carbon dioxide, sodium bicarbonate, carbon monoxide	Examples - sand, soil, chicken soup, pizza, chocolate chip cookies.	Examples - salt water, pure air, metal alloys, seltzer water.