21.oil and water
22.rice from chaff
23.sand and water
24.vegetable salad
25.paper clips and sand
26.salt and water
27.corn starch and corn pepper
28.sugar and water
29.thumbtack and gravel
30.sand and gravel
a.decantation
b. using of magnets
c.evaporation
d.winnowing
e.filtration
f.picking of sorting
g.sedimentation
h.sieving
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Answer:
21.) Distillation
22.) D
23.) E
24.) F
25.) B
26.) Distillation
27.) ?
28.) Distillation
29.) B
30.) F
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