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GCSE- States Of Matter > States Of Matter > Flashcards

States Of Matter Flashcards

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1
Q

Dissolving

A

The mixing of a solid with a liquid to make a solution

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2
Q

Mixture

A

Two or more substances that are next to each other but are not chemically bonded

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3
Q

Saturated

A

A solution containing the maximum quantity of solute that it can hold 

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4
Q

Soluble

A

A substance that can be dissolved in a solvent

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5
Q

Solubility

A

A measure of how much solvent can dissolve the solution at a given temperature

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6
Q

Solute

A

Solid that dissolves in a solvent to make a solution 

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7
Q

Solvent

A

The liquid in which a solid dissolves to make a solution

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8
Q

How is a solution formed?

A

When solute dissolves in solvent

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9
Q

Sublimation

A

When a solid turns straight to a gas
(No liquid stage)

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10
Q

What is depostion?

A

When a gas turns staight into a solid
(No liquid stage)

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11
Q

Pure substance

A

A substance that has one definite melting point
(Fixed melting point)

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12
Q

Impure substance

A

Substance that does not have a definite melting point , it will melt over a range of temperatures

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13
Q

Pure

A

A substance made of one element or compound

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14
Q

Impure

A

A substance of two or more other substances mixed in


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15
Q

How does solid get to liquid

A

Melt

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16
Q

How does liquid get to gas

A

Boiling

17
Q

How does gas get to liquid

A

Condensing

18
Q

How does liquid get to solid?

A

Freezing

19
Q

Heating curve

A

How the temperature changes, as a substance is heated up

20
Q

Separtating insoluble solids from a liquid

A

Filteration

21
Q

Separating soluble solid from liquid

A

Evaporation

22
Q

3 processes in Distillation

A
  • evaporating
  • condensing
  • collecting
23
Q

What is chromatography used for

A

To separate substances, distinguish pure/impure substances

24
Q

Why does the mixture get separated?

A

The more soluble substances in the mixture spread along the papaer faster. The father of the dye travels up the chromatogram the more soluble it is 

25
Q

How do you identify substances

A

By calculating the Rf value

26
Q

What is the RF value

A

Ratio compared to how far the component has travelled / how far the solvent have travelled

27
Q

What does the RF value always have

A

No units
Less than one

28
Q

What if there is one colour

A

Its a pure substance

29
Q

Solvent front

A

The furthest point in which the water has risen up the chromatogram

30
Q

How do you calculate the Rf value

A

Can you measure the distance from the baseline to the solvent front – seeing how soluble the dyes are

GCSE- States Of Matter (1 decks)

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