Separation Techniques

Question 1

Separation Funnel

Answer 1

mixture of 2 immiscible liquids (eg oil and water) higher density oil sits on top as the tap is opened and water comes out leaving oil

Question 2

magnet

Answer 2

mixture of solids (iron and sand) in a beaker, magnet will attract iron separating it from mix

Question 3

sieving

Answer 3

mixture of solids (sand and rock) due to different sizes, sieving works

Question 4

solubility

Answer 4

mixture of soluble and not substance, by adding water the soluble substance will dissolve leaving separate liquid and solid

Question 5

filtration

Answer 5

mixture of solid and liquid, liquid will pass through filter paper

Question 6

decantation

Answer 6

mixture of solid and liquid(water+sand) the solid will rest at the bottom because of density so when poured solid stays there

Question 7

evaporation

Answer 7

mixture of soluble and liquid (eg salt and water) when heated up the water evaporates leaving salt in crystal form

Question 8

distilation

Answer 8

mixture of solvent (dissolves solid - water) and solute (dissolved - salt) uses evaporation technique but then to collect water condensation is collected in tube