Separation Methods

Question 1

What do distillation separate

Answer 1

A Liquid from a solution

Question 2

What’s the problem with simple distillation

Answer 2

You can only use it to separate things with very different boiling points

Question 3

What equipment do you need for simple distillation

Answer 3

Condenser, rubber tubing, distillation flask, beaker

Question 4

Step one of simple distillation to get pure water from seawater

Answer 4

Pour your sample of seawater into the distillation flask

Question 5

Step 2 simple distillation

Answer 5

Set up apparatus. Connect the bottom end of the condenser to a cold tap using rubber tubing. Run cold water through the condenser to keep it cool

Question 6

Step 3 of simple distillation

Answer 6

Gradually heat the distillation flask. The part of the solution that has the lowest bp will evaporate

Question 7

Step 4 simple distillation

Answer 7

The water vapour passes into the condenser where it cools and condenses, it then flows back into the beaker where it is collected

Question 8

Step 5 simple distillation

Answer 8

Eventually you’ll just end up with salt

Question 9

What does fractional distillation separate

Answer 9

A mixture of liquids

Question 10

What does filtration separate

Answer 10

An insoluble solid from a liquid

Question 11

What does crystallisation separate

Answer 11

A soluble solid from a solid

Question 12

What are the 2 phases in chromatography

Answer 12

Mobile and stationary

Question 13

What is the mobile phase in chromatography

Answer 13

When molecules can’t move. Solid or really thick liquid