Actual yield - the actual amount of the product which is often less than the theoretical yield because of incomplete reaction or the loss of some products during purification

Anhydrous - a compound (substance) contains no water in its crystal lattice

Avogadro constant - 12.0 g of carbon-12 (   C) contains 6.02 x 10²³ atoms;  L = 6.02 x 10²³ mol–1

Empirical formula - the simplest whole number ratio of atoms or ions present in the compound

Hydrated - an ionic compound that contains water molecules in its crystal lattice

Limiting reactant - the amount of limiting reactant limits how much products are formed

Molar mass - the mass of one mole of a substance; the unit is gram per mole (g mol^–1)

Mole - the amount of a substance that contains the same number of particles as there are atoms in 12.0 g of carbon-12 (   C)

Mole - the amount of a substance that contains the same number of particles as there are atoms in 12.0 g of carbon-12 (   C)

Percentage yield - the efficiency of the reaction, calculated as Percentage yield = actual yield / theoretical yield x 100%

Theoretical yield - the amount of product predicted from the chemical equation when known amounts of reactants undergo the reaction

Water of crystallization - the water included in crystal lattice with a regular pattern of cations, anions and water molecules in a compound