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GCSE Science - Biology > Diffusion > Flashcards

Diffusion Flashcards

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1
Q

What is diffusion?

A

The gradual movement of particles where there are LOTS of them to where there are FEWER of them - NATURAL TENDENCY for stuff to SPREAD OUT.

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2
Q

What is the DEFINITION of diffusion?

A

DIFFUSION is the SPREADING OUT of PARTICLES from an area of HIGHER CONCENTRATION to an area of LOWER CONCENTRATION

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3
Q

Why can diffusion happen in solutions and gases?

A

Because particles in these substances are free to MOVE ABOUT randomly

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4
Q

What will happen to the perfume particles in the air?

A

The perfume particles will diffuse in the air - this is the SIMPLEST TYPE of diffusion when GASES diffuse through each other.

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5
Q

What is the CONCENTRATION GRADIENT?

A

The DIFFERENCE in concentration between two substances

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6
Q

What does a bigger concentration gradient do to the diffusion rate?

A

Bigger concentration gradients means FASTER diffusion rate

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GCSE Science - Biology (7 decks)

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