A student is given a sample of an unknown liquid to test in the laboratory. The student thinks that the liquid is water. Which of the following properties of the sample is most helpful to determine if the liquid is water?

This question is incomplete, the options are:

(A) color of the liquid

(B) mass of the liquid

(C) the volume of the liquid

(D) the boiling point of the liquid

The answer is D

Explanation:

Substances at different states usually possess certain properties that distinguishes them. For example, in this case involving a student who was given a sample of an unknown liquid to test in the laboratory, he thinks that the unknown liquid is water. Specific properties of the unknown liquid can be used to identify whether it is water or not.

One property that can be used to ascertain whether or not it is water is the boiling point of the liquid. This is because specific liquids have specific boiling point. So if the unknown liquid has a boiling point of 100°C, then it can be ascertained to be water.