The movement of molecules from an area of higherconcentration to an area of lowerconcentration
In diffusion..
Particles will move in bothdirections, but there will be a netmovement from higher to lower concentration
When fully spread, they will still continue to move
What is this?
Diffusion
What is a solute?
The dissolved substance in a solution
What is a solvent?
The liquid in which the solute dissolved to form a solution
What is a solution?
Mixture formed by a solute and a solvent
What is the concentration gradient?
The difference in concentration of a substance between 2 areas
The concentration gradient effect:
The greater the difference in concentration, the quicker the rate of diffusion
Why does higher temperature make diffusion quicker?
The particles will have Increased kineticenergy, therefore they will move and mix more quickly
The greater the surface area…
The faster the rate of diffusion
Why will puppies lose body heat quicker than adult dogs?
Dogs loose heat over their bodysurface
Puppies have a much largersurfacearea to volume ratio
Large organisms
Have a very low surface area to volume ratio..
So they have mechanisms to increase surface area proportionally - such as: absorbing areas, adaptions of shape, transport systems (to reduce diffusion)