Question

Lisa had 20 grams of water. She poured out 15 grams. Which of the following physical properties of the water changes?

**Boiling point
Density
Electrical conductivity
Volume

Answer 1

It's very simple. Answer is the VOLUME.
The more water means the more volume. Obviously, if you have a glass of water fully filler and a glass of water half filled.
Volume occupied by half filled is less than fully filled.

So, it is volume.

Boiling point, density and conductivity does not depend on mass.