| A | B |
|---|
| stoichiometry | study of quantitative relationships of chemical formulas and chemical reactions |
| formula mass | sum of atomic masses of all the elements represented by the formula of a substance (ionic compounds) |
| molecular mass | sum of atomic masses of all the elements represented by the molecular formula of a substance (covalent compounds) |
| gram atomic mass | quantity of substance with mass in grams equal to its formula mass |
| gram molecular mass | quantity of molecular substance with mass in grams equal to its molecular mass |
| mole | Avogadro’s number of particles (6.02 x 10^23) |
| STP | 0 degrees C and 1 atmosphere (101.3 kPa) |
| 22.4 liters | volume of 1 mole of any gaseous matter at STP |
| percentage composition | percentage by mass of each element in a compound |
| molar volume | volume of gaseous substance at STP (22.4 liters) |
