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Chemistry S3: Unit 2 Nature’s Chemistry > Key Area 2: Everyday Consumer Products > Flashcards

Key Area 2: Everyday Consumer Products Flashcards

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1
Q

Functional group that alcohols are recognised by

A

Hydroxyl group

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2
Q

Hydroxyl group is the functional group present in alcohols

A

Covalent molecular compounds. -OH

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3
Q

Hydroxide ions found in alkalis

A

Ionic compound. OH-

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4
Q

General formula of alcohols

A

Cn H2n +1 OH

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5
Q

Alcohols contain the elements

A

Carbon hydrogen and oxygen

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6
Q

Naming alcohols

A

Add -ol

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7
Q

Properties of alcohols

A
  1. Boiling point increases with molecular size
  2. Liquids at room temp
  3. Increasing melting and boiling points increase their strength of intermolecular forces between molecules
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8
Q

Alcohols are used as

A

Fuels, drinks , solvents and disinfectants

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9
Q

Used as fuel because

A

Highly flammable

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10
Q

Used as solvents because

A

Volatility

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11
Q

Volatility

A

How quickly a liquid changes into a gas

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12
Q

Carboxylic acids are used in the preparation of

A

preservatives, soaps and medicines

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13
Q

Methanol and Ethanol burn with clean…

A

flames

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14
Q

Vinegar is a solution of

A

Ethanoic acid, molecular formula CH3COOH

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15
Q

Methanoic, ethanoic, propanoic and butanoic are … in water. Thereafter the solubility decreases as size …

A
  1. Miscible
  2. increases
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16
Q

Combustion reaction equation

A

Alcohol + oxygen –> carbon dioxide + water

17
Q

Volatility

A

how quickly a liquid changes into a gas

18
Q

Volitile

A

changing from a liquid to a gas

19
Q

Isoprpyl alchol (ipa) systematic name (sometimes rubbing alcohol

A

propan - 2 - ol

20
Q

What properties of alcohols makes them suitable for fuels?

A

highly flammable

21
Q

What properties of alcohols makes them suitable solvents?

A

Volatility

22
Q

As Carboxylic acids increase in size their melting and boiling points..

A

Increase due to the increasing strength of the intermolecular forces

23
Q

Carboxylic acids can be identified by the carboxyl functional group…

A

-COOH

24
Q

Carboxylic acids can be represented by the general formula…

A

Cn H2n +1 COOH

25
Q

The carboxylic group must always be at the end of the carbon chain since…

A

there is only one spare bond

26
Q

Straight chain carboxylic acids can be systematically named from structural formula containing no more than

A

8 carbons

27
Q

Molecular formula can be

A

written

28
Q

Structural formula can be

A

drawn

29
Q

Solutions of carboxylic acids have a pH

A

less than 7

30
Q

Solutions of carboxylic acids can react with

A

metals, metal oxides, hydroxides and carbonates forming salts

31
Q

Salts are formed from

A

straight-chained carboxylic acids

32
Q

Carboxylic acids are used in the preparation of

A

preservative soaps and medicines

33
Q

Simple carboxylic acids are

A

liquid at room temperature

34
Q

Carboxylic acids have a pH of

A

2 - 5 they are weak acids

35
Q

Hydrocarbons contain

A

A compound that contains hydrogen and carbon … only

Chemistry S3: Unit 2 Nature’s Chemistry (3 decks)

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