Chemistry Separation Techniques Key Words

Question 1

Condensation

Answer 1

When a gas turns into a liquid

Question 1

Evaporation

Answer 1

When a liquid turns into a gas

Question 2

Sublimation

Answer 2

When a solid goes directly to a gas

Question 3

Pure substance

Answer 3

Consists of only one element or one compound

Question 4

Impure substance

Answer 4

Consists of two or more different substances , not chemically joined together.

Question 5

Mixture

Answer 5

Another word for an impure substance.

Question 6

Solvent

Answer 6

The liquid used to dissolve other substances.

Question 7

Solution

Answer 7

Contains a solid dissolved in a liquid.

Question 8

Simple distillation

Answer 8

Where a liquid is removed from a dissolved solid by heating

Question 9

Fractional Distillation

Answer 9

Where a mixture of liquids is separated by evaporation

Question 10

Chromatography

Answer 10

A method of separating colored substances using paper and a solvent

Question 11

Chromatogram

Answer 11

The result of a chromatography experiment

Question 12

Mobile phase

Answer 12

The liquid (solvent) that moves through the chromatography paper

Question 13

Stationary Phase

Answer 13

The chromatography paper ( it doesn’t move)

Question 14

Insoluble

Answer 14

Does not dissolve in a solvent

Question 15

Filtrate

Answer 15

The liquid that passes through the filter paper into the flask during filtration

Question 16

Residue

Answer 16

The solid remaining on the filter paper after filtration

Question 17

Crystallisation

Answer 17

Obtaining a solid from a solution by heating the solution to evaporate the liquid.