What is the difference between colloids, suspension and true solution?

Jun 28, 2017

Well, a solution is $\text{homogeneous..........}$
And in an $\text{homogeneous solution}$, all its components are in the same phase. Consider sugar/salt in water, or dinitrogen or dioxygen in the air we breathe. Both are examples of solutions........
On the other hand, $\text{a suspension}$ is $\text{inhomogeneous}$. Typically this is a slurry of finely divided solid in water or some other solvent, from which the solid has precipitated.
On the other, other hand, a $\text{colloid}$ is an inhomogeneous mixture of solid and solvent, a disperse phase, in which the particle size of the solid is such that it does not tend to settle. Typical colloids, say milk, have particle sizes from $1 \cdot n m - 1 \cdot \mu m$.........