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Chemistry Paper 2 > Organic Chemistry > Flashcards

Organic Chemistry Flashcards

1
Q

Where do we find crude oil?

A

Rocks

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2
Q

Is crude oil finite or renewable?

A

Finite

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3
Q

How is crude oil formed

A

Over millions of years
From the bodies of Dead Sea creatures (plankton) that were buried in mud

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4
Q

What is crude oil a mixture of?

A

Hydrocarbons

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5
Q

What is a hydrocarbon?

A

Molecules only made up from hydrogen and carbon atoms

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6
Q

How to work out the amount of hydrogen atoms in a hydrocarbon

A

The amount of carbon atoms

  • x 2
    • 2
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7
Q

Structure of butane?

A

C(4)H(10)

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8
Q

Structure of Ethane?

A

C(2)H(6)

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9
Q

Structure of Methane?

A

C(1)H(4)

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10
Q

Structure of propane?

A

C(3)H(8)

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11
Q

What does viscosity mean?

A

It tell us the thickness of a fluid

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12
Q

How fast do fluids with a high viscosity flow?

A

Flow slowly

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13
Q

How fast do fluids with a low viscosity flow?

A

Flow quickly

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14
Q

What happens to the viscosity of the hydrocarbons as you increase the size of their molecules?

A

They get more viscous

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15
Q

What does the flammability of a hydrocarbon tell us?

A

How easily it can combust (burn)

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16
Q

How flammable are short chain hydrocarbons?

A

Extremely flammable

17
Q

How flammable are long chain hydrocarbons?

A

Not very flammable

18
Q

What is the boiling point like at short chain hydrocarbons?

A

Lower than high chain

19
Q

What is the boiling point like at long chain hydrocarbons?

A

Higher than short chain

20
Q

what happens during fractional distillation?

A
  • crude oil heated and boiled
  • this vapour goes into the column
  • vapour then rises
  • vapour condenses once its reached its boiling point
21
Q

what colour flame does complete combustion produce?

A

Blue

22
Q

What colour flame does incomplete combustion produce?

A

Orange

23
Q

what are the products of complete combustion?

A

Water + carbon dioxide

24
Q

What are the products of incomplete combustion

A

water and mixture of carbon dioxide carbon monoxide and carbon

25
Q

What is cracking?

A

splitting a long alkane in to a shorter alkane and an alkene

26
Q

Alkane?

A

A hydrocarbon with only single covalent bonds

27
Q

Alkene?

A

A hydrocarbon with a carbon to carbon double bond

Chemistry Paper 2 (4 decks)

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