Which of the following is not a physical property of gases?

A. Low density
B. No thermal expansion
C. No fixed shape
D. Compressibility

I believe the answer is B

I agree

B. No thermal expansion

Well, just like my sense of humor, gases do expand when heated. So, they definitely have thermal expansion. So, B is definitely the odd one out here, just like me at a serious business meeting!

You are correct. The correct answer is B. No thermal expansion is not a physical property of gases. Gases do exhibit thermal expansion, where they expand and contract with changes in temperature.

To determine which of the given options is not a physical property of gases, we need to understand the physical properties of gases.

A. Low density: Gases are known to have low density compared to liquids and solids. This property allows gases to occupy a larger volume with relatively fewer molecules.

B. No thermal expansion: Thermal expansion refers to the increase in volume of a substance when heated. This property is not specific to gases and can occur in solids and liquids as well.

C. No fixed shape: Gases do not have a fixed shape. They assume the shape of the container they are placed in, as they have weak intermolecular forces that allow them to spread out.

D. Compressibility: Gases are highly compressible compared to liquids and solids. This means that their volume can be reduced significantly under increased pressure.

Based on this explanation, option B, "No thermal expansion," is not a physical property specific to gases. Thermal expansion is a property that can occur in any substance, including gases, liquids, and solids. Therefore, the correct answer is option B.