Atomic Structure and Properties

1.4  Composition of Mixtures

Essential Knowledge:

*These are taken directly from College Board

◼ While pure substances contain molecules or formula units of a single type, mixtures contain molecules or formula units of two or more types, whose relative proportions can vary. (SPQ-2.B.1) 

◼ Elemental analysis can be used to determine the relative numbers of atoms in a substance and to determine its purity (SPQ-2.B.2)