Classification of Matter
•
Matter - anything that occupies space and has mass
• all matter is made up of chemicals
MatterMixtureHomogeneousHeterogeneousSubstanceElem entsCompounds
•
Mixture: combination of 2 or more substances in which the substances retain distinct identities (air, milk, cement, tea, coffee)
•
Homogeneous mixture: same composition throughout (sugar in water, tea)
•
Heterogeneous mixture: non-uniform composition (sand + iron filings)
•
Substance: form of matter that has a definite or constant composition and distinct properties (H2O, NH3, sugar, gold...)
•
Elements: substance that cannot be separated into simpler elements by chemical means
•
Compounds: substance composed of atoms of 2 or more elements chemically united in fixed proportions