Unit 5 Stoichiometry Vocabulary

Front

This is the amount of a substance that contains as many particles as there are atoms in exactly 12 g of carbon-12.

Back

Mole

Front

Explains the relationship between mass and numbers of atoms. The number equals 6.0221367 x 1023 rounded to 6.022 x 1023.

Back

Avogadro’s number

Front

The mass of one mole of a pure substance.

Back

molar mass

Front

This deals with the mass relationships of elements in compounds.

Back

composition stoichiometry

Front

This involves the mass relationships between reactants and products in a chemical reaction.

Back

reaction stoichiometry

Front

This is a “conversion factor” that relates the amounts in moles of any two substances involved in a chemical reaction.

Back

mole ratio

Front

The reactant that limits the amounts of other reactants that can combine and the amount of product that can form in a chemical reaction.

Back

limiting reactant

Front

The substance that is not used up completely in a reaction.

Back

excess reactant

Front

The maximum amount of product that can be produced from a given amount of reactant.

Back

theoretical yield

Front

The measured amount of a product obtained from a reaction.

Back

percent yield