Seperating Mixtures

Question 1

Physical change

Answer 1

No change in particles,just the particle arrangement and energy,easy to reverse e.g. mixing water and salt

Question 2

Chemical change

Answer 2

A chemical reaction takes place and a new substance is formed, very difficult to reverse e.g. burning a match

Question 3

During a chemical reaction

Answer 3

The atms rearrange to form new substance. Might be seen by colour change, tempature change, light being emitted or bubbles

Question 4

Law of conservation of mass

Answer 4

The law of conservation of mass states that
matter cannot be created or destroyed but can
change from one form to an

Question 5

Filtration

Answer 5

Used to separate small insoluble solids ( do not dissolve in liquid) from a liquid by using filter paper and a funnel to trap the solids

Question 6

Evaporation

Answer 6

Used to separate soluble solids ( dissolve in liquids) from a solution by evaporating off the liquid to leave the solids

Question 7

Distillation

Answer 7

Used to Seperate two liquids with different boiling points such as alchohol(boils at 78 degrees) and water boils at 100 degrees. Also used to seperate a soluble solid from a liquid e.g. seawater

Question 8

Chromatography

Answer 8

Used to separate a mix of dissolved substances in a solution. E.g. the different colours in a black marker p168

Question 9

Imsoluble

Answer 9

Does not dissolve in a liquid

Question 10

Soluble

Answer 10

Dissolves in liquid

Question 11

Residue

Answer 11

The soil left in the filter paper after filteration

Question 12

Filtrate

Answer 12

The flea water hat comes after filteration

Question 13

Evaporation

Answer 13

Used to Seperate a soluble solid from a liquid e.g. salt and water

Question 14

Solvent

Answer 14

The liquid that a solid is dissolved into

Question 15

Solute

Answer 15

The solid that is left behind after evaporation