Physics Education
By Pathare, S R & Pradhan, H C
“Students’ Misconceptions About Heat Transfer Mechanisms and Elementary Kinetic Theory”
Publisher:
6/45
Pp. 629-643
2010
Students’ Misconceptions About Heat Transfer Mechanisms and Elementary Kinetic Theory
Type: Empirical
Data collection method: Test
Number of subjects, range: Large — 31 or more
Grade and age of subjects: Adult — over 18 years
- A gas has no mass. For some students, negligible mass means no mass.
- If the gas is in a closed container it has mass, but if it is in an open container it has no mass.
- An ideal gas is a gas that obeys all of the gas laws but a real gas does not obey gas laws.
- The molecules of an ideal gas exert no interactive forces whatsoever. As a result, they do not exert any pressure on the walls of the container.
- A real gas is a mixture and an ideal gas is not.
- The change in volume from the liquid state to the vapour state is due to a change in the size of molecules and breaking of molecules.
- The smoke due to a burning incense stick rises as the molecules of the smoke are warm and hence lighter than air.