# At what temperature would 250 mL water boil? 1000 mL? Is the boiling point an intensive or extensive property?

Any amount would boil at ${100.0}^{\circ} \text{C}$. It's a property that doesn't depend on the extent of the quantity, i.e. it is not extensive. So it is an intensive property.
You can tell because the units of temperature are $\text{^@ "C}$. It's not $\text{g"^@ "C}$, so the temperature does not depend on the mass present. It's not $\text{mol"^@ "C}$, so it doesn't depend on the $\text{mol}$s present. It only depends on what temperature the water is at.
The more water there is, the more water molecules that must acquire enough energy before the system as a whole is observed to be at ${100.0}^{\circ} \text{C}$.