chemistry unit 6 part 4

solutions are known as

homogenous mixtures

homogenous mixture

two or more materials are combined in such a way as to form a single phase that has the same composition properties and appearance throughout

minor component of a mixture being dissolved

solute

two types of solutes

electrolytes and non-electrolytes

electrolytes

are ionic compounds which form ions when they dissolve and conduct and electric current

non-electrolyte

a substance that does not readily ionize when dissolved or melted and is a poor conductor of electricity.

heterogeneous mixture

combination of two or more materials in which more than one phase is present

3 types of heterogeneous mixtures

1. those that contain two or more separate phases (oil and water)
2. suspensions, that appear visually to be one but when allowed to stand, settle out
3. colloids, appear homogenous one phase mixtures but are composed of particles too small to be seen wit

suspensions

appear visually to be one but when allowed to stand, settle out

colloids

appear homogenous one phase mixtures but are composed of particles too small to be seen with the naked eye

how are colloids distinguished from solutions

by a beam of light

true or false: all three states of matter can be involved as a solute or solvent

true

tyndall effect

Scattering of a light beam as it passes through a colloid