Crude Oil, Hydrocarbons & Alkanes (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Flashcards

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Crude Oil, Hydrocarbons & Alkanes
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Elements in hydrocarbons

Only hydrogen and carbon atoms

Definition of homologous series

Family with similar properties & same general formula

Boiling point trend as carbon atoms increase

Boiling point increases

Definition of crude oil

Mixture of different hydrocarbons

Time for crude oil to form

Millions of years

What crude oil formed from

Remains of dead plants and animals

Conditions that formed crude oil

High heat and pressure

How crude oil is extracted

By drilling into the ground

Is crude oil finite or renewable?

Finite (limited)

Definition of alkanes

Saturated hydrocarbons with only single bonds

Meaning of 'saturated' for alkanes

Max H atoms possible, only single C-C bonds

General formula for alkanes

CnH2n+2C_nH_{2n+2}

What nn represents in alkane formula

Number of carbon atoms

Three reactions alkanes undergo

Combustion, react with halogens, cracking

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Hydrocarbons: Fuel & Feedstock

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Hydrocarbons: Fuel & Feedstock

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Hydrocarbons: Fuel & Feedstock

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Hydrocarbons: Fuel & Feedstock

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