| Term | Definition |
| Excess reactant | A reactant that is not completely consumed in a chemical reaction is called a(n) ______. |
| Avogadro’s principle | The following statement is called _______; At equal temperatures and equal pressures, equal volumes of gases contain the same number of molecules. |
| Molar volume | The ______ of a gas is the volume occupied by one mole of the gas under standard conditions. |
| Limiting reactant | A(n) ______ is the reactant that is completely used up in a chemical reaction. |
| Ideal gas equation | PV=nRT, which represents the relationship among pressure, temperature, volume, and moles of a gas, is called the _______. |