separating techniques

Question 1

how do you obtain pure salt from a salt solution?

Answer 1

evaporation

Question 2

how do you separate chalk and water?

Answer 2

filtration

Question 3

how do you separate oil and water?

Answer 3

separation

Question 4

oil and water do not mix, they are _________

Answer 4

imiscible

Question 5

oil and water are separated using a __________ ______

Answer 5

separating funnel

Question 6

how do you separate alcohol and water?

Answer 6

distillation

Question 7

what is alcohols boiling point?

Answer 7

78oc

Question 8

what is the boiling point of water?

Answer 8

100oc

Question 9

what are the anti-bump granules for in distillation?

Answer 9

do ensure smooth, even boiling

Question 10

what do you see in the receiver after a few minutes during distillation?

Answer 10

a colourless liquid

Question 11

how can you prove alcohol isn’t water?

Answer 11

you could test to see if it boils at 78oc

Question 12

what are the 2 processes that take place during distillation?

Answer 12

-boiling/evaporating
-condensating

Question 13

why do you need cold water surrounding the condenser in distillation?

Answer 13

to ensure the constant condention

Question 14

give 2 examples where distillation is used?

Answer 14

-preparing whiskey
-refining crude oil to produce petrol, diesel and heating oil

Question 15

to separate chalk and water we ______ the mixture?

Answer 15

filter