Journal of Physics: Conference Series
By Jauhariyah, M. N. R., Suprapto, N., Admoko, S., Setyarsih, W., Harizah, Z., & Zulfa, I.
“The Students’ misconceptions profile on chapter gas kinetic theory”
Publisher:
2017
The Students’ misconceptions profile on chapter gas kinetic theory
Type: Empirical
Data collection method: Test
Number of subjects, range: Large — 31 or more
Grade and age of subjects: 6th-8th grade — 12-14 years
The Ideal Gas Properties
- When the particle strikes the wall, the particle’s momentum changes and loses its speed.
- Collisions between particles produce opposite directions from the direction of the previous motion.
- Gas State Equation
- The gas in the enclosed space despite suppressed molecular motion remains.
- The greater temperature of the gas in the enclosed space, the gas undergoes expansion resulting in reduced pressure.
Ideal Gas Law
- Giving pressure from the outside on the opposite side can restore the shape of a dented pimp bulb.
- The balloon inside the closed syringe can’t expand or collapse even though the injecting tube pump is pulled up because the balloon diameter is too small.
- The wax absorbs the liquid when the candle is covered with glass.
- When the egg is on the bottle, the air in the bottle is so packed that the bottle can suck the egg.
- Temperature cannot affect the balloon so that at any temperature change any form of the fixed balloon.
Gas Kinetic Energy
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In a closed space, the amount of gas particles is directly proportional to
the kinetic energy of the gas.
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As the kinetic energy increases the gas particles in the closed space also increases.
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The temperature of the gas in the enclosed space is inversely proportional
to the speed of particle motion.
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When heated, the movement of the gas particles slows down and the gas
particles shrink.
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The kinetic energy of the gas does not depend on the gas pressure.