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Science > Matter And Mixtures > Flashcards

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

The amount of matter in an object

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3
Q

3 states of matter

A

Solids
Liquids
Gases

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4
Q

Properties of a solids

A

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

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5
Q

Properties of liquids

A

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

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6
Q

Properties of gases

A

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

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7
Q

Energy

A

In order for a substance to change state from a solid to a liquid ,or liquid to gas it needs heat energy.
As a substance changes state, it uses latent heat.

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8
Q

The melting point

A

The melting point is when both the solid and liquid state exist together (changing from a solid to
liquid

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9
Q

The boiling point

A

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

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10
Q

Condensation

A

Is the changing point of a gas to a liquid

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11
Q

Diffusion

A

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

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12
Q

Plasma

A

Is the fourth state of matter, like gas but can conduct elecricity

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13
Q

Physical change

A

No Change particles just the particle arrangement and energy easy to reverse eg mixing water And salt

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14
Q

Chemical change

A

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

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15
Q

During a chemical reaction

A

The atoms rearrange to for a new substance might be seen by colour change tempature change light being emitted or bubbles

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16
Q

A mixture

A

consists of two or more
substances mingled together but not
chemically combined e.g. sand and water

17
Q

There are four methods of separating mixtures

A

Filtration
Evaporation
Distillation
Chromatography

18
Q

Filtration

A

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

19
Q

Evaporaion

A

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

20
Q

Distillation

A

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

21
Q

Chromatography

A

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

22
Q

Soluble

A

Dissolves in a liquid

23
Q

Insoluble

A

Does not dissolve in a liquid

24
Q

Solute

A

The solid that is left behind after evaporation

25
Q

Filtrate

A

The clean water that comes after filtration

26
Q

Residue

A

The soil left in filter paper after filtration

27
Q

Distillation

A

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

28
Q

Miscible

A

Liquids that mix together e.g. alcohol and water

29
Q

Liebig condenser

A

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

30
Q

Distillate

A

clean water at the end of distillation

31
Q

Chromatography

A

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

32
Q

Chromatogram

A

chromatography paper with separated ink

33
Q

Reactant

A

chemicals that react together in a chemical reaction

34
Q

Products

A

the substances formed after a chemical reaction

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