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CHEM 235 Glossary

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acidic

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Terms in this set (42)

turns litmus pink while alkaline turns litmus blue

special type of absorption, adhesion of material to surface of bodies, attached either by chemical bonds or van der waals forces

liquid layer in which water is the solvent, density close to 1 g/ml

a mixture of two or more substances that distills at a constant temperature and with a constant composition even though the two have different boiling points. this occurs when intermoleculer interactions take place

benchtop extraction

scrap up solid and then recrystalization or soak up with cotton and extracting to recover spilled substance. you spilled. we're cheap so we'll pick it up and reuse it

alundum, releases bubbles to solution, bubbles allow vapour to go up. never add to hot solution

sudden violent surge of vapour breaking from the surface of liquid. if liquid is free of trapped air pockets, temperature exceeds boiling points, pressure gets crazy and then BUMPING. so use boiling chips my friends

celite/filteraid

white coarse powder, filteraid. prevent small particles from passing through filter paper.

direction of water flow is always against gravity

1) liquid boiled to vapour 2) vapour condensed to liquid into diff container

the liquid from distillation

the foamy layer between two immisicible liquids

the liq that passed through the filter

fractionating column

glass tube with large internal surface area so gas can condense and evaporate

attracts moisture