Osmosis and diffusion Flashcards
What is diffusion?
It is the process by which molecules spread from an area of high concentration to an area of low concentration.
When does osmosis and diffusion stop?
When they reach equilibrium.
The speed of mixing by diffusion depends on what?
Viscosity (thickness), temperature, size (thickness) of the environment.
What is osmosis?
Water molecules moving from an area of high concentration to an area of low concentration through a cell membrane.
What are the three types of osmotic solutions?
hypoosmotic/hypotonic
hyperosmotic/hypertonic
isomotic/isotonic
What is a hyperosmotic/hypertonic solution?
A solution with less solvent than solute.
What is an isomotic/isotonic solution?
A solution that has the same amount of solvent as solute.
What is a hypoosmotic/hypotonic solution?
A solution with more solvent than solute.
What is the difference between diffusion and osmosis?
Osmosis is a type of diffusion. Diffusion can occur with almost everything, where as with osmosis, it will deal with the movement of water molecules through a cell membrane.
What is the osmosis rule?
Water always flows from a hypoosmotic solution, to a hyperosmotic solution.
What does salt do when it is concentrated in or outside a cell?
It will attract water in its direction.
