Alkenes (AQA GCSE Chemistry): Flashcards

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Alkenes
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Key structural feature of alkenes

Carbon-to-carbon double bond (C=C)

Elements present in alkenes

Carbon and hydrogen only

Process that forms alkenes from long alkanes

Cracking

What 'unsaturated' means for alkenes

Don't have maximum possible number of hydrogen atoms

General formula for alkenes

CnH2nC_nH_{2n}

Molecular formula of ethene

C2H4C_2H_4

Molecular formula of propene

C3H6C_3H_6

Molecular formula of butene

C4H8C_4H_8

Ending of alkene names

-ene

How to draw C=C double bond in structures

Two parallel lines (=) between carbon atoms

Fewer H atoms in alkenes vs similar alkanes

Two fewer hydrogen atoms

Type of series alkenes belong to

Homologous series

Number of H atoms in alkene with nn C atoms

2n2n hydrogen atoms

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Hydrocarbons: Fuel & Feedstock

Reactions of Alkenes & Alcohols

Synthetic & Natural Polymers

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Hydrocarbons: Fuel & Feedstock

Reactions of Alkenes & Alcohols

Synthetic & Natural Polymers

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Hydrocarbons: Fuel & Feedstock

Reactions of Alkenes & Alcohols

Synthetic & Natural Polymers

Explore AQA GCSE Chemistry Exam Questions by Topics

Hydrocarbons: Fuel & Feedstock

Reactions of Alkenes & Alcohols

Synthetic & Natural Polymers

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