Question

If you shine a flashlight through air in a darkened room, you can see that the
air is filled with tiny particles of dust. What would determine whether this dust is a
suspension or a colloid?

Answer 1

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If we shine a flashlight through air in a darkened room, you can see that the air is filled with tiny particles of dust it is a colloid consisting solid in gas.

The dust particles are colloids and are viewed due to the Tyndall effect.

At a dark place if homogeneous substances are present on passing a beam of light it's visible .

They are clear & translucent.

They got seen like germs very small moving here & their in beam of light. This is due to the phenomenon known as Tyndall effect.

The bright light cone is known as a Tyndall cone .

The particles moves due to Brownian movement which means random movement of colloidal particles in zig zag way.

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