Cracking & Alkenes (AQA GCSE Chemistry): Quizzes

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Cracking & Alkenes
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What type of hydrocarbons are alkanes?

Saturated

What is the general formula for alkanes?

CnH2n+2C_nH_{2n+2}

What type of hydrocarbons are alkenes?

Unsaturated

What is the general formula for alkenes?

CnH2nC_nH_{2n}

What is cracking?

Breaking long hydrocarbons into shorter ones

What can decane be cracked into?

Octane and ethene

What conditions are used in catalytic cracking?

High temperature and a catalyst

What is mixed with hydrocarbons in steam cracking?

Steam

Why are shorter hydrocarbons in higher demand?

They are more flammable and make better fuels

What type of bonds do alkanes contain between carbon atoms?

Only single covalent bonds

How many double bonds do alkenes have?

At least one

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