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Year 7 Chemistry

TermDefinition
Simple Separation Taking out parts of a mixture by hand or with tools when they’re easy to see and grab
Magnetic separation Using a magnet to pull out things made of iron or steel from a mixture
Decanting Gently pouring the liquid off the top when heavier stuff has sunk to the bottom
Flotation Letting lighter things float to the top so you can skim them off
Filtering Using a filter to catch solids while letting liquid or gas pass through
Distillation Heating a liquid to make steam, then cooling it to get pure liquid back
Evaporation Letting a liquid turn into a gas and leave the solid behind
Sieving Shaking a mixture through holes to separate larger pieces from smaller ones
Centrifuging Spinning a mixture fast so heavier parts move to the outside
Crystallisation Making solid crystals form when a liquid cools or evaporates
Sedimentation Letting heavy particles settle at the bottom of a container over time
Chromatography Using paper and liquid to separate colours in a mixture
Solutions A mixture where solute particles are completely dissolved in the solvent
Suspensions mixtures where solute particles are large enough to be seen and settle out over time
Colloids they are a middle ground, with particles that don't settle and can scatter light
Emulsions a specific type of colloid where one liquid is dispersed in another
Mixture a combination of two or more substances
Solubility the ability of a substance to dissolve in another and form a solution
Solvent the substance that does the dissolving
Solute the substance that gets dissolved
Substance A kind of matter used in experiments
factors that increase solubility higher temperature, smaller particle size, less substance
factors that decrease solubiluity lower temperature, larger particle size, more substance
Created by: justineforrest
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