MATTER 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 gasses

Question 4

PROPERTIES OF SOLIDS

Answer 4

solids have definite shapes
solids have definite volume
solids can not be compressed
solids cannot flow

Question 5

properties of liquids

Answer 5

liquids have no definite shape
liquids have definite volume
liquids cannot be compressed
liquids can flow

Question 6

properties gasses

Answer 6

gasses have no definite shape
gasses have not definite volume
gasses can be compressed
gasses can flow

Question 7

HEAT ENERGY

Answer 7

in order for substance to change state(from a solid to a liquid or liquid to gas) it needs heat energy
as a substance changes state is uses latent heat. there is no change to temperature but the state of material changes

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 materiel changes.

Question 9

MELTING POINT

Answer 9

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

Question 10

BOILING POINT

Answer 10

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

Question 11

CONDENSATION

Answer 11

is the changing of a gas to a liquid

Question 12

DIFFUSION

Answer 12

is the movement of particles from an area of high concentration to an area of low concentration eg.spraying perfume in one corner of the room and it spreads to the rest of the room

Question 13

PLASMA

Answer 13

is the fourth state of matter,like gas but can conduct electricity

Question 14

PHYSICAL CHANGE

Answer 14

nos change in particles just the particle arrangement and energy easy to reverse eg.water and slag being mixed

Question 15

CHEMICAL CHANGE

Answer 15

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

Question 16

DURING A CHEMICAL REACTION

Answer 16

the atoms rearrange to form a new substance.might be seen by color change,temperature change, light being emitted or bubbles

Question 17

LAW OF CONSERVATION MASS

Answer 17

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

Question 18

MIXTURE

Answer 18

a mixture consists of two or more substances mingles together but not chemically combined eg.sand and water
there are four methods of separating mixtures
filtration
evaporation
distillation
chromatography

Question 19

FILTRATION

Answer 19

used to separate small insoluble solids (do not dissolve in a liquid) for a liquid by using filter paper and funnel to trap the solids eg.sand and water

Question 20

EVAPORATION

Answer 20

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

Question 21

DISTILLATION

Answer 21

Used to separate two liquids with
different boiling points such as
alcohol (boils at 78o
) and water
(boils at 100 o
). Also used to
separate a soluble solid from a
liquid (e.g. seawater) to give a pure
sample of each.

Question 22

CHROMATOGRAPHY

Answer 22

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

Question 23

insoluble

Answer 23

does not dissolve in a liquid

Question 24

soluble

Answer 24

dissolves in a liquid

Question 25

residue

Answer 25

the soil left in the filter paper after filtration

Question 26

filtrate

Answer 26

the clean water that comes after filtration

Question 27

evaporation

Answer 27

used to separate a soluble solid from a liquid e.g. salt and water

Question 28

solvent

Answer 28

the liquid that a solid is dissolved into

Question 29

solute

Answer 29

the solid that is left behind after evaporation

Question 30

distillation

Answer 30

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

Question 31

miscible

Answer 31

Liquids that mix together e.g. alcohol and water

Question 32

liebig condenser

Answer 32

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

Question 33

distillate

Answer 33

clean water at the end of distillation

Question 34

chromatography

Answer 34

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

Question 35

chromatogram

Answer 35

chromatography paper with separated ink

Question 36

reactant

Answer 36

chemicals that react together in a chemical reaction

Question 37

products

Answer 37

the substances formed after a chemical reaction