Molality: the number of moles of solute (the material dissolved) per kilogram of solvent (what the solute is dissolved in) Molar: a term expressing molarity, the number of moles of solute per liters of solution. Molarity: the number of moles of solute (the material dissolved) per liter of solution. used to express the concentration of a solution. Mole: a collection of 6. 022 * 10 to the 23 power number of objects. Molecular formula: shows the number of atoms of each element present in a molecule. Molecular geometry (vsepr): shape of a molecule, based on the relative position of the atoms. Molecular mass: the combined mass (as given on the periodic table) of all the elements in a compound. Molecule: two or more atoms chemically combined. Mole fraction: the number of moles of a particular substance expressed as a fraction of the total number of moles. Neutral: an object that does not have a positive or negative charge.