B2.1 Diffusion Flashcards
1
Q
What does diffusion mean?
A
Gradual movement of particles from a high concentration to a low concentration.
2
Q
Which part of a cell do the particles diffuse through?
A
The membrane.
3
Q
What determines the speed of the reaction?
A
The concentration.
4
Q
What is meant by ‘Osmosis’?
A
A type of diffusion with water passing through a semi-permeable membrane. From high concentrations to low concentrations.
5
Q
What happens when potato is added to salt water?
A
It bends because of the change in concentrations and the movement of the particles causing the potato to become flaccid.
6
Q
What is diffusion?
A
The spreading out of particles from an area of high concentration to an area of low concentration.
