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Ch. 10 The mole - vocab

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Avogadro's number
number of representative particles in a mole, 6.022 X 10²³
empirical formula
a formula showing the lowest whole number ratio of atoms in a compound
hydrate
a compound that has a specific number of water molecules bound to each formula unit
molar mass
the mass in grams of one mole of a pure substance
mole
SI base unit used to measure the amount of a substance,
molecular formula
a formula showing the types and numbers of atoms combined in a single molecule of a molecular compound
percent composition
the percent by mass of each element in a compound
molecule
the representative particle for a covalent compound
formula unit
the representative particle for an ionic compound
atom
representative particle for an element or a metallic substance