The spreading of fragrance or scent in air is due to_______________?
Correct answer: A. Diffusion
- A. Diffusion
- B. Effusion
- C. Attraction with air
- D. Low dsensity
Explanation
Fragrance molecules move randomly from the region of high concentration near the source into regions of lower concentration, causing diffusion through air. Effusion is the escape of gas molecules through a tiny hole, so choosing it confuses two different forms of molecular spreading.
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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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