Separating Materials

Question 1

Mixture

Answer 1

Made up of different substances, not chemically joined together.

Question 2

Compounds

Answer 2

Different substances chemically bonded together.

Question 3

Pure substance

Answer 3

Has no other substances mixed with it.

Question 4

Impure substance

Answer 4

Different substances are mixed with it.

Question 5

Soution

Answer 5

A solution is a mixture of a liquid with a solid or gas.

Question 6

Solvent

Answer 6

The liquid that makes up most of the solution eg water

Question 7

Solute

Answer 7

The substance that is added to the solvent and dissolves in it.

Question 8

Solubility

Answer 8

The mass of a solute that dissolves in 100g of water.

Question 9

Saturated solution

Answer 9

When so much solute has been added to the solvent that no more can dissolve in it.

Question 10

Soluble

Answer 10

Soluble substances can dissolve.

Sugar is more soluble than salt.

Question 11

Insoluble

Answer 11

Some substances cannot dissolve in water.

Sand and chalk

Question 12

Increasing solubility

Answer 12

Increasing the temperature often increases the solubility.

Question 13

Filtration

Answer 13

Separates a liquid from an insoluble solid (eg sand from water)

Question 14

Residue

Answer 14

Solids left behind in the filter paper.

Question 15

Filtrate

Answer 15

The liquid thta passes through the filter paper.

Question 16

Evaporation

Answer 16

To separate a solute and solvent, leaving thw solute eg salt and water, salt left behind.

Question 17

Distillation

Answer 17

A method separating a solute and solvent keeping the solvent.
Solution is boiled, turned into a gas, cooled in a condenser and turns back into a liquid.

Question 18

Chromatography

Answer 18

Separate susbstances in a mixture that are soluble in a solvent eg dyes or ink.
A chromatogram shows the separate dyes.