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Chemistry GCSE > 4- Organic Chemistry > Flashcards

4- Organic Chemistry Flashcards

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1
Q

Define homologous series

A

Same general formula

Group of compounds

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2
Q

Define functional group

A

A group of atoms that Determines how a compound typically reacts

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3
Q

Define isomers

A

Same molecular formula, different structural formula

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4
Q

Alkenes functional group

A

C=C

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5
Q

Alkenes General formula

A

CnH2n

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6
Q

Alkenes un/saturated

A

Unsaturated, has C=C bond

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7
Q

How to form haloalkANES

A

Add halogen to alkenes to make haloalkanes

Addition reaction

Eg bromine and ethene is a dibromoethANE

Bromine reacts with alkENES to make dibromoalkANES

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8
Q

Identifying alkanes vs alkenes

A

Orange bromine water goes colourless (forms dibromoalkanes) if ALKENE

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9
Q

Alkane General formula

A

CnH2n+2

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10
Q

Alkane un/saturated

A

Saturated, no C=C

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11
Q

Haloalkanes

A

Halogens and alkanes react in the presence of UV light

Substitution reaction

Eg bromine and methane make bromomethane

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12
Q

Forming nitrous oxides in cars

A

Temperatures become high enough, nitrogen from fuel reacts oxygen in air

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13
Q

Forming sulphur dioxide

A

Sulphur impurities in the hydrocarbon

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14
Q

Forming of acid rain

A

Sulphur dioxide from sulphur impurities

Nitrous oxides from cars

React with water vapour in clouds, forming dilute dilutive acid and nitric acid

Causes death of animals and plants

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15
Q

Conditions for catalytic cracking

A

609-709 C, silica or alumina

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16
Q

Demand and supply of chained alkenes and alkanes

A

Short chain hydrocarbons are in higher demand (eg octane)

Long chain and broken down into short chain (also produces alkenes)

17
Q

How is an addition polymer formed

A

Joining small molecules called monomer (small repeating units)

18
Q

Why is it difficult to dispose of polymers

A

Inertness and inability to biodegrade

Production of toxic gas when burnt

Chemistry GCSE (8 decks)

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