Chemistry Flashcards

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1
Q

Matter

A

Anything that occupies space and had mass

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2
Q

Mass

A

Is the amount of matter in a object

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3
Q

3 states of matter

A

Solids liquids and gasses

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4
Q

Property of solids

A

Solids have a definite shape,volume,solids can not be compressed and can’t flow

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5
Q

Properties of liquid

A

Liquid

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6
Q

Melting point

A

Is when both the solid and liquid state exist together changing form solid to liquid

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7
Q

Boiling point

A

Of a liquid is when evaporation begins to happen thought out the liquid changing form liquid to gas

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8
Q

Condensation

A

Is changing of a gas to a liquid

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9
Q

Diffusion

A

Is the movement of the particles from an 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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10
Q

Plasma

A

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

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11
Q

Physical change

A

No change in particles just the particle arrangement and Energy easy to reverse e.g. mixing water and slat

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12
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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13
Q

During a chemical reaction

A

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

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14
Q

Law of conservation of mass

A

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

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15
Q

Mixture

A

Consist of 2 or more substances mingled together but not chemically combined e.g. sand and water

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16
Q

Four methods Of separating mixtures

A

Filtration
Evaporation
Distillation
Chromatography

17
Q

Filtration

A

Used to separate small insoluble solids(don’t dissolve this liquid) from a liquid by using filter paper and a funnel to Trap the solids e.g. sand an water

18
Q

Evaporation

A

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

19
Q

Distillation

A

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

20
Q

Chromatography

A

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

21
Q

Insoluble

A

Does not dissolve in a liquid

22
Q

Soluble

A

Dissolves in a liquid

23
Q

Residue

A

The soil left in the filter paper after filtration

24
Q

Filtrate

A

The clean water that comes after filtration

25
Q

Evaporation

A

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

26
Q

Solvent

A

The liquid that a solid is dissolved into

27
Q

Solute

A

The solid that is left behind after evaporation

28
Q

Distillation

A

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

29
Q

Miscible

A
  • Liquids that mix together e.g. alcohol and
30
Q

Liebig condenser

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

 Distillate - clean water at the en

31
Q

Distillate

A

Clean water at the end of distillation

32
Q

Chromatography

A

Used to separate mixtures of substances that are in solution e.g.dye in ink

33
Q

Reactant

A

chemicals that react together in a chemical reaction

34
Q

Products

A

the substances formed after a chemical reaction