Answer:
B. Density
Explanation:
Thermal expansion of a gas will cause a definite change in the density of the gas.
It is product of an increase in the average kinetic energy of the system in which molecules are found.
- Gaseous thermal expansion will increase the volume in which gases occupy.
- Mass of the gas will still remain the same.
- Since density is the mass per unit volume, as the gases expand, their density reduces more and more.
Therefore, thermal expansion of gas will cause a change in the density of the gas.
