Diffusion Flashcards

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What is diffusion?

Diffusion is the spreading out of particles, moving from an area of high concentration to one of low concentration.

How does diffusion occur in liquids?

In liquids, particles move and mix through the motion of molecules.

For example, a drop of ink in water will spread out from high concentration to low concentration until it is evenly distributed.

What is a concentration gradient?

A concentration gradient is the difference in concentration between two areas.

Diffusion occurs when particles move from an area of high concentration to an area of low concentration.

How does diffusion occur in gases?

In gases, particles are very spread out and can move and vibrate quickly.

Diffusion in gases allows substances to mix until evenly distributed, like perfume spreading throughout a room.

What is Brownian motion?

Brownian motion is the random movement of particles in gases due to collisions with other moving particles, causing them to spread out randomly.

What factors affect the rate of diffusion?

Temperature: Higher temperatures increase the rate of diffusion.

Size of particles: Smaller particles diffuse faster.

State of Matter: Diffusion is faster in gases than in liquids and does not occur in solids.

Revision Notes
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