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Chemistry 3RD form > Som, Mixture And Separation > Flashcards

Som, Mixture And Separation Flashcards

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1
Q

What are the 3 states of matter

A

Solid liquid gas

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2
Q

Properties of solids

A

Have a fixed shape
Have a fixed volume
Cannot flow
Don’t compress

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3
Q

Properties of liquids

A

Take shape of container
Have a fixed volume
Can flow
Do not compress

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4
Q

Properties of gases

A

Take shape of container
Don’t have a fixed volume
Can flow
Can be compressed

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5
Q

Particles in solids

A

Don’t move
Vibrate
High melting point
Arranged in fixed pattern

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6
Q

Particles in liquids

A

Move a little
Randomly arranged
Close together
Changing neighbours

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7
Q

Particles in gases

A

Move freely
Bounce off each other
Randomly arranged
Lots of space between

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8
Q

What is melting

A

It’s a heating of solid to liquid energy increases and particles vibrate more the particles break free of their structure and move a little

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9
Q

What is boiling/ evaporating

A

It’s a heating of liquid to gas energy increases particles move more and break free of the structure

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10
Q

What is freezing

A

It’s a cooling of liquid to solid energy decreases particles stop moving and just vibrate forming a fixed shape

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11
Q

What is condensing

A

It’s a cooling of gas to liquid energy decreases particles move less and begin to group together

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12
Q

What’s a pure substance

A

A substance where all the particles are te same

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13
Q

What’s a mixture

A

A substance that contains different particles

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14
Q

What’s an element

A

A substance made from 1 type of atom

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15
Q

What’s a compound

A

A substance made from different types of atoms joined together

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16
Q

What’s a formulation and a few examples

A

A mixture that has been designed and a useful product

Alloys, fertilisers, fuels, medicines, cleaning agents, paints,

17
Q

What’s a solution

A

A solute disolved in a solvent

18
Q

What’s a solute

A

A substance that s disolved in a solvent

19
Q

What’s a solvent

A

A liquid in which chemicals dissolve to make a solution (e.g. water, ethanol)

20
Q

What’s a aqueous solution

A

A solution where a solute is disolved in water

21
Q

What’s a non aqueous solution

A

A solution where the solute is disolved in a solvent that isn’t water (e.g. ethanol)

22
Q

What is chromatography used for

A

It’s used to separate mixtures of coloured and non coloured substances that are solvable in the same solvent

23
Q

What’s the Rf formula

A

Distance moved by samples div distance moved by the solvent

Chemistry 3RD form (4 decks)

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