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Chem CH12 Section 1

Chemistry CH12 Section 1 Counting Particles of Matter

TermDefinition
Avogadro’s number the number of things in one mole of a substance
formula mass the mass in atomic mass units of one formula unit of an ionic compound
molar mass the mass of one mole of a pure substance
mole the unit used to count numbers of atoms, molecules, or formula units of substances
molecular mass the mass in atomic mass units of one molecule of a covalent compound
stoichiometry the study of relationships between measurable quantities, such as mass and volume, and the number of atoms in chemical reactions