chemistry test

combination of two or more substances not reacted

two or more substances mixed not chemically combined (uniform throughout)

<1nm, no tyndall, no settle, no filter, Homogeneous

1-1000 nm, yes tyndall, no settle, no filter, heterogeneous

1000 nm, yes tyndall, yes settle, yes filter, heterogeneous

type of suspension where when setting the solid is at the bottom and the liquid is on top but when its stirred the solid flows like a liquid

particles in a colloid are changed, the dispersion medium has opposite charges, these attractions and repulsions keep the particles suspended

add ions of opposite charge to break attractions

erratic movement of colloid particles due to collisions of particles

scattering of light by particles

liquid/liquid colloid held together by an emulsifying agent

“like dissolves like”

a substance that dissolves in solvent

a substance that does not dissolve in a solvent

two liquids soluble in each other in any proportion

two liquids that can be mixed but separate shortly after

amount of solute that will dissolve in a given amount of solvent

full of solute

not full of solute

overfull of solute

measure of how much solute is dissolved in a specific amount of solvent or solution

is dissolved

does the dissolving

solvent particles attract to solute particle, pull off a solute particle, completely surround that solute particle, continues until solute dissolved or solvent full of solute, only happens at attraction of solvent for solute is stronger than solute particle attractions

speeds it up, exposes solute to fresh unsaturated solvent continuously

higher temp speeds it up, more ke=faster solvent=more dissolving

smaller is faster, more surface area

increase temp=increase solubility

increase temp=decrease solubility

increase pressure=increase solubility

a property that depends only upon the number of solute particles not the identity of the solute

vapor pressure of a solution is less than that of pure solvent, less water with enough KE to escape surface= less vapor pressure

freezing point of a solution is lower than the freezing point of the pure solvent, solute disrupts the formation of orderly pattern in a solid

boiling point of a solution is higher than that of a pure solvent, adding solute decreases VP must add more KE to raise VP of liquid to atmospheric pressure

water moves to make concentrations equal side with more particles applies more pressure to the membrane, more particles=more water moves=higher pressure