Boiling point and properties of substances
All water boils at 100°C when heated, even if it has a different mass.
In this way, the same kind of substance has the same boiling point regardless of quantity.
But different substances express different boiling points.
In this way, substances have properties that distinguish them from other substances.
Properties that distinguish substances include boiling point, freezing point, density, solubility, spectrum, etc.
2022.12.08 Update: Applying the specific heat of water and ethanol