The table below shows some physical properties of two unknown samples.
Physical Properties
Sample Volume Freezing Point
A 1000 ml 0 °C
B 1000 ml −95 °C
What would best support whether the two samples are of the same substance or not?
a) The two substances are the same because their intensive property is the same.
b) The two substances are the same because their extensive property is different.
c) The two substances are not the same because their extensive property is the same.
d) The two substances are not the same because their intensive property is different.
d) The two substances are not the same because their intensive property is different.
In this case, the freezing point is an intensive property because it does not depend on the amount of substance present. The fact that sample A has a freezing point of 0 °C while sample B has a freezing point of -95 °C indicates that they are likely not the same substance, as they have different chemical compositions or molecular structures.