Matters And Mixtures

Question 1

Matter

Answer 1

Anything that occupies space and has mass

Question 2

Mass

Answer 2

Is the amount of matter in an object

Question 3

3 states of matter

Answer 3

Solids , liquids and gases

Question 4

Properties of solids

Answer 4

Solids have a definite shape
Solids have a definite volume
Solids cannot be compressed
Solids cannot flow

Question 5

Properties of liquids

Answer 5

Liquids have no definite shape
Liquids have a definite volume
Liquids cannot be compressed
Liquids can flow

Question 6

Properties of gases

Answer 6

Gases have no definite shape
Gases have no definite volume
Gases can be compressed
Gases can flow

Question 7

Heat energy

Answer 7

In order for a substance to change state it needs heat energy

Question 8

Latent heat

Answer 8

As a substance changes state, it uses latent heat. There is no change to temperature, but the state of the material changes

Question 9

The melting point

Answer 9

When both the solid and liquid state exist together (changing from a solid to a liquid)

Question 10

The boiling point

Answer 10

Of a liquid is when evaporation begins to happen throughout the liquid (changing from liquid to gas)

Question 11

Condensation

Answer 11

Is the changing of a gas to a liquid

Question 12

Diffusion

Answer 12

If you spray perfume, it spreads.

Question 13

Plasma

Answer 13

Is the fourth state of matter like gas but can conduct electricity

Question 14

Physical change

Answer 14

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

Question 15

Chemical change

Answer 15

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

Question 16

During a chemical reaction

Answer 16

The atoms rearrange to form a new substance. Might be seen by colour change, temperature change, light being emitted and bubbles

Question 17

Conservation of mass

Answer 17

Matter can be changed from one form to another. During chemical and physical changes, there is no overall change in mass

Question 18

A mixture

Answer 18

Consists of two or more substances mingled together but not chemically combined eg sand and water

Question 19

Four methods of separating mixtures

Answer 19

1 filtration
2 evaporation
3 distillation
4 chromatography

Question 20

Filtration

Answer 20

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

Question 21

Evaporation

Answer 21

Used to separate soluble solids (dissolve in liquid) from a solution by evaporating off the liquid to leave solids eg salt and water

Question 22

Insoluble

Answer 22

Does not dissolve in liquid

Question 23

Soluble

Answer 23

Dissolves in liquid

Question 24

Residu

Answer 24

The soil left in the filter paper after filtration

Question 25

Filtrate

Answer 25

The clean water that comes after filtration

Question 26

Evaporation

Answer 26

Used to separate a soluble solid from a liquid eg salt and water

Question 27

Solvent

Answer 27

the liquid that a solid is dissolved into

Question 28

Solute

Answer 28

the solid that is left behind after evaporation

Question 29

Distillation

Answer 29

- method of separation used to separate a soluble solid and its solvent, or two miscible liquids with different boiling points

Question 30

Miscible

Answer 30

- Liquids that mix together e.g. alcohol and water

Question 31

Liebig condenser

Answer 31

piece of equipment used in distillation in which cool water flows to condense steam to water

Question 32

Distillate

Answer 32

clean water at the end of distillation

Question 33

Chromatography

Answer 33

used to separate mixtures of substances that are in a solution e.g. dyes in i

Question 34

Chromatogram

Answer 34

chromatography paper with separated ink

Question 35

Reactant

Answer 35

chemicals that react together in a chemical reaction

Question 36

Products

Answer 36

the substances formed after a chemical reaction