B1.6 Diffusion Flashcards

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1
Q

What is diffusion?

A

The net movement of particles from an area of high concentration to an area of low concentration with a concentration gradient

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2
Q

What factors affect the rate of diffusion?

A

Concentration gradient

Temperature

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3
Q

How does a concentration gradient affect the rate of diffusion?

A

The bigger the difference - the faster the rate of diffusion as more particles will move randomly toward the area of low concentration

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4
Q

How does the temperature affect the rate of diffusion?

A

Means more particles have more kinetic energy - this will lead to them moving around quickly - causing the net movement of particles to speed up - increasing the rate of diffusion

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5
Q

How does oxygen get into your red blood cells?

A

Air in the lungs diffuse into red blood cells from an area of high concentration to an area of low concentration

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6
Q

Why does diffusion take place more if the surface area is increased?

A

Much more of a substance moves in a given time

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