All the collisions between the particles of gases are elastic in nature. What is meant by "Elastic Collisions"?
Correct answer: A. No change in the total kinetic energy
- A. No change in the total kinetic energy
- B. The velocity of the molecules changes
- C. No change in potential energy during the collisions
- D. No change in mass during the collisions
Explanation
By definition, an 'Elastic collision' describes a collision whereby the total kinetic energy of the molecules is unchanged so, option A is correct. Option B, velocity may or may not change in elastic collisions, and the velocity also changes in inelastic conditions as well. Option C, potential energy is not usually used in the context of elastic collisions. Option D is a correct statement but it holds true for all types of collisions and is not exclusive to elastic collisions.
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About Kinetic Molecular Theory
Kinetic molecular theory explains gases as rapidly moving particles separated by large distances, with negligible volume and negligible intermolecular attraction in the ideal model. It relates temperature to average kinetic energy and explains gas pressure, Boyle's and Charles's laws, diffusion, effusion and the conditions under which real gases deviate from ideal behavior.
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