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Science > Matter And Mixtures > Flashcards

Matter And Mixtures Flashcards

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
Gases

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4
Q

Water

A

Solid:ice
Liquid:water
Gas:steam

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5
Q

Properties of solids

A

1.solids have a definite shape
2.solids have a definite volume
3.solids can’t be compressed

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6
Q

Properties of liquid

A

1.Liquid have no definite shape
2.liquids have a definite volume
3.liquids can’t be compressed
4.liquids can flow

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7
Q

Gases

A

1.gases have no definite shape
2.gases have no definite volume
3.gases can be compressed
4.gases can flow

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8
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.there is no change to temperature,but the state of the material changes

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9
Q

Melting point

A

Is when 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 from a liquid to a gas

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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 a area of high concentration to an area of low concentration e.g.spray perfume in one corner of the room,and it spreads to the rest of the room

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13
Q

Fourth state of matter

A

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

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14
Q

Physical change

A

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

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15
Q

Chemical change

A

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

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16
Q

During chemical reaction

A

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

17
Q

Law of conservation of 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

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

 There are four methods of separating
mixtures:
1. Filtration
2. Evaporation
3. Distillation
4. Chromatography

19
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.e.g.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. E.g. salt
water.

21
Q

Distillation

A

Used to separate two liquids with different boiling points such as alcohol and water.also used to separate a soluble solid from a liquid to give a pure example 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

Does dissolve 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

Solvent

A

The liquid that a solid is dissolved into

28
Q

Solute

A

The solid that is left behind after evaporation

29
Q

Distillation

A

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

30
Q

Miscible

A

Liquids that mix together e.g. alcohol and water

31
Q

Liebig condenser

A

Piece of equipment used in distillation in which cool water flows to condense the stream to water

32
Q

Distillate

A

Clean water at the end of distillation

33
Q

Chromatogram

A

Chromatography paper with separated ink

34
Q

Reactant

A

Chemicals that react together in a chemical reaction

35
Q

Products

A

The substances formed after a chemical reaction

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