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GCSE Chemistry⚗ > Organic Chemistry > Flashcards

Organic Chemistry Flashcards

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1
Q

What is the formula for alkanes?

A

Cn H2n+2

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2
Q

What is the formula for ethane?

A

C2H6

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3
Q

What is the formula for alkenes?

A

Cn H2n

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4
Q

What is the formula for butene?

A

C4H8

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5
Q

How are alkanes separated?

A

Fractional distillation

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6
Q

What is crude oil a mix of?

A

Different Hydrocarbons

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7
Q

What do alkenes use in their formula?

A

Double bonds

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8
Q

Why is there no such thing as methene?

A

Carbon needs a double bend with another carbon but cannot as it is a single carbon

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9
Q

Give examples of the alkenes in their homologous series

A

Ethene, propene, butene, pentene, hexene.

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10
Q

What is methane used in?

A

Stoves

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11
Q

What are propane and butane used for?

A

Barbecues and camping stoves

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12
Q

What are the 4 groups in organic chemistry?

A

Alkanes, alkenes, alcohols and carboxylic acids

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13
Q

What is the formula for alcohols?

A

Cn H2n+1 OH

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14
Q

What do all alcohols have?

A

A hydroxyl group (-OH)

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15
Q

What are alcohols are room temperature?

A

Liquid

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16
Q

What state are alkanes in at room temperature?

A

Gas

17
Q

What are the 2 ways of producing ethanol?

A

1) ethene + steam

2) Fermenting sugar with yeast

18
Q

As the carbon number increases, what also increases?

A

The boiling point

19
Q

How is ethanol converted to ethanoic acid?

A

Oxidation

20
Q

What is the formula for carboxylic acids?

A

CnH2n02

21
Q

What do all carboxylic acids contain?

A

A -COOH group

22
Q

What does an increase in the chain length mean?

A

That it will be more of a waxy solid

23
Q

Where can we find ethanoic acid in everyday life?

A

Vinegar

24
Q

In fractional distillation, what do longer carbon chains indicate?

A

That they are less useful as they are heavier

25
Q

In fractional distillation, what do shorter carbon chains indicate?

A

That they are more useful as they are lighter

26
Q

What is chromatography?

A

The separation of coloured ink into the colours it is made of

27
Q

How do you work out the Rf value?

A

Height of dot/ height of water

28
Q

What is a monomer?

A

A molecule that can be bonded to other identical molecules

29
Q

What is a polymer?

A

A substance which has a molecular structure built up chiefly or completely from a large number of similar units bonded together

GCSE Chemistry⚗ (7 decks)

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