Quantitive aspects of chemical change

mole

the amount of substance having the same number of particles as there are atoms in 12g carbon-12

Avogadro’s number

the number of particles present in a mole N_A=6,023×10²³

relative atomic mass

the mass of a particle on a scale where an atom of carbon-12 has a mass of 12

molar mass

the mass of one mole of a substance measured in g.mol^-1

empirical formula

the simplest whole-number ratio of atoms in a compound

water of crystallization

water that is stoichiometrically bound into a crystal

standard solution

a solution of known concentration

concentration

the number of moles per cubic decimeter of solution

Avogadro’s law

one mole of any gas occupies the same volume at the same pressure and temperature

stoichiometric calculations

calculations involving the mole ratios of reactants and products in a chemical equation

solute

the dissolved substance

solvent

the substance in which the solute is dissolved

solution

a homogenous mixture of 2 or more substances

concentration

the number of moles per cubic decimeter of solution