Seperating Mixtures Flashcards

0
Q

What does miscible mean?

A

Liquids that do mix together.

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1
Q

What does immiscible mean?

A

Liquid that do not not mix together and produce 2 separate layers.

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2
Q

What piece of scientific apparatus is used to separate miscible liquids?

A

A Liebig condenser

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3
Q

How are miscible liquids with very different boiling points separated?

A

Distillation

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4
Q

How can you separate oil and balsamic vinegar?

A

Separating funnel

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5
Q

How do you separate a salt water solution? Obtaining salt

A

Evaporation of water using heat leaving the salt

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6
Q

How do you separate single malt whiskey. You want to keep the ethanol.

A

Distillation

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7
Q

How do you separate crude oil?

A

Fractional distillation

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8
Q

What is another way to separate mixtures?

A

Chromotography

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9
Q

To work out the rf value…

A

The distance moved by solvent front

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10
Q

What is a hydrocarbon?

A

A compound containing only hydrogen and carbon.

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11
Q

How do you split up large hydrocarbons?

A

You heat up the hydrocarbons at a high pressure.

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12
Q

Why is fraction distillation used instead on simple distillation?

A

Because simple distillation is used when the boiling points of different substances are very far away where as fractional is used when they are very close together.

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13
Q

What are refinery gases used for?

A

Fuel

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14
Q

What is gasoline used for

A

Fuel for cars

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15
Q

What is kerosine used for?

A

Planes

16
Q

What is diesel used for?

A

Lorries

17
Q

What are bitumen used for?

A

Lubricating oils and roads surfaces

18
Q

Describe how the fractional distillation of crude oil process works.

A

Crude oil is heated at the bottom of the tower. The tower is hotter at the bottom and cool at the top. Crude oil evaporates and rises up the tower. Different boiling points condense at different compartments. Lower boiling points condense at the top. Higher boiling points condense at the bottom.