WAEC Chemistry 2021 Objective — Question 22
Question 22 of 50 from the West African Examinations Council (WAEC) Chemistry 2021 Objective paper, with the correct answer and a full explanation.
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22. The collision between ideal gas molecules are considered to be perfectly elastic because
- A. they collide without losing energy.Correct
- B. they move randomly in straight lines.
- C. their average kinetic energy is variable.
- D. the distance between them is large compared to their sizes.
Explanation
An elastic collision is one where total kinetic energy is conserved — no energy is lost during collision.
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