Boiling point is the temperature at which a liquid boils and turns to a gas.
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<span>An unsaturated solution is one that has a concentration lower than it's solubility. What happens is all of the solute dissolves in the solvent. For example, dumping a spoon of sugar into coffee ends up with an unsaturated solution. Because all the sugar dissolves into the solvent (the coffee).</span>
The density of an object or quantity of matter is its mass divided by its volume.