MATTER AND MIXTURES Flashcards

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1
Q

MATTER

A

Anything that occupies space and has mass

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2
Q

MASS

A

is the amount of matter in an object

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3
Q

3 STATES OF MATTER

A

solids,liquids and gasses

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4
Q

PROPERTIES OF SOLIDS

A

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

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5
Q

properties of liquids

A

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

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6
Q

properties gasses

A

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

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7
Q

HEAT ENERGY

A

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

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8
Q

LATENT HEAT

A

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

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9
Q

MELTING POINT

A

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

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10
Q

BOILING POINT

A

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

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11
Q

CONDENSATION

A

is the changing of a gas to a liquid

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12
Q

DIFFUSION

A

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

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13
Q

PLASMA

A

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

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14
Q

PHYSICAL CHANGE

A

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

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15
Q

CHEMICAL CHANGE

A

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

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16
Q

DURING A CHEMICAL REACTION

A

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

17
Q

LAW OF CONSERVATION MASS

A

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

18
Q

MIXTURE

A

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

19
Q

FILTRATION

A

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

20
Q

EVAPORATION

A

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

21
Q

DISTILLATION

A

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.

22
Q

CHROMATOGRAPHY

A

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

23
Q

insoluble

A

does not dissolve in a liquid

24
Q

soluble

A

dissolves in a liquid

25
Q

residue

A

the soil left in the filter paper after filtration

26
Q

filtrate

A

the clean water that comes after filtration

27
Q

evaporation

A

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

28
Q

solvent

A

the liquid that a solid is dissolved into

29
Q

solute

A

the solid that is left behind after evaporation

30
Q

distillation

A

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

31
Q

miscible

A

Liquids that mix together e.g. alcohol and water

32
Q

liebig condenser

A

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

33
Q

distillate

A

clean water at the end of distillation

34
Q

chromatography

A

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

35
Q

chromatogram

A

chromatography paper with separated ink

36
Q

reactant

A

chemicals that react together in a chemical reaction

37
Q

products

A

the substances formed after a chemical reaction