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Question

Which of the following substances allows for the fastest diffusion?

A
Gas
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B
Solid
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C
Liquid
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D
Plasma
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Solution

The correct option is A Gas
Diffusion is fastest through gases, followed by liquid, then plasma, and lastly, solids. In chemistry, diffusion is defined as the movement of matter by the random motions of molecules. In a gas or a liquid, the molecules are in perpetual motion; for instance, in a quantity of seemingly immobile air, molecules of nitrogen and oxygen are constantly bouncing off each other.

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