concentration
of a solution is a measure of how much solute that is dissolved in a given quantity of solvent
dilute
a solution with a small amount of solute
concentrated
a solution with a large amount of solute
molar concentration
also called molarity is the number of malls dissolved in 1 L of solution
percent by volume
of the solution is the ratio of the volumes of solute to solution
percent by mass
of a solution is the ratio of the masses of the solute and solution