ch 6 Stoichiometry and Chemical Reactions

A set of vocabulary flashcards covering key concepts related to stoichiometry and chemical reactions.

Stoichiometry

The relationship between various amounts of reactants and products in a chemical reaction.

Law of Conservation of Mass

During a chemical reaction, the total mass of reactants must equal the total mass of products.

Balanced Chemical Equation

An expression showing that the numbers of atoms of each element are equal on both sides.

Coefficients

Numbers placed in front of the compounds to balance a chemical equation.

Limiting Reactant

The reactant that is completely consumed in a chemical reaction, limiting the amount of product formed.

Excess Reactant

The reactant that remains after the limiting reactant is completely consumed.

Empirical Formula

The simplest whole number ratio of elements in a compound.

Molecular Mass

The sum of the atomic masses of all atoms in a molecule.

Percent Yield

The ratio of the actual yield of product to the theoretical yield, expressed as a percentage.

Combustion Analysis

A method used to determine the empirical formula of a compound through combustion in excess oxygen.