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GCSE Chem > Crude Oil > Flashcards

Crude Oil Flashcards

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1
Q

Isomer

A

Same molecular formula, different structure

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2
Q

Unsaturated

A

Compounds that have double bonds

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3
Q

Saturated

A

Only contain single bonds

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4
Q

Alkanes

A

CnH2n+2
Saturated
Single bonds

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5
Q

Alkenes

A

CnH2n
Unsaturated
Double bonds

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6
Q

Saturation experiment for Alkene

A

Add bromine water
Brown –> colourless

(stay brown in alkane)

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7
Q

Hydrocarbon

A

Compound that contains hydrogen and carbon ONLY

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8
Q

Homologous series properties

A

1- Trend in physical properties

2- Similar chemical properties

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9
Q

Explain how fractional distillation can be used to separate crude oil.

A

1- Different hydrocarbons have different oiling points so crude oil can be separated into fractions
2- The crude oil is heated and vaporised and passed into the fractioning column
3- The fractioning column is hotter at the bottom and cooler at the top
4- The vapour rises and the hydrocarbon condenses when it reaches it’s boiling point.

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10
Q

How does the length of the molecules in the fractions chance as you go up the column?

A

The length of the molecules decrease in the fractions as you go up the fraction column

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11
Q

What are conditions for carrying out cracking?

A

Heating the substance (aluminium/silica) at 600-700°

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12
Q

Volatility

A

How easy something can turn into a gas

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13
Q

Flammability

A

How easy something catches fire

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14
Q

Viscosity

A

Thickness of water

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15
Q

What is Crude oil?

A

mixture of hydrocarbons

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16
Q

What does incomplete combustion of fuels produce?

A

carbon monoxide, which is poisonous because it reduces the capacity of the blood to carry oxygen

17
Q

Order of Gasses in Fractional Distillation

A 
Refinery Gas
Gasoline 
Kerosine
Diesel
Fuel oil
Bitumen
18
Q

What is Refinery Gas used for?

A

Heating and Cooking

19
Q

What is Gasoline used for?

A

Fuel for cars

20
Q

What is Kerosine used for?

A

Fuel for planes

21
Q

What is Diesel used for?

A

Fuel for trains/trucks

22
Q

What is Fuel oil used for?

A

Fuel for ships

23
Q

What is Bitumen used for?

A

To make Tar for roads

24
Q

Where is it most viscous?

A

At the bottom

25
Q

Where is the highest boiling point?

A

At the bottom

GCSE Chem (13 decks)

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