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Alkanes, combustion and cracking · GCSE Chemistry · Courselo

Courselo

GCSE Chemistry
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Organic chemistry

Alkanes, combustion and cracking

Organic chemistry · Lesson 2 of 5

Lesson 2 of 5

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Unit 7

Organic chemistry

5 lessons · 7 h 30 min of study

Crude oil, fuels and fractional distillation1 h 15 min of study
Alkanes, combustion and crackingReading · 0%
Alkenes, addition reactions and addition polymerisation1 h 45 min of study
Alcohols, ethanol and fermentation1 h 15 min of study
Carboxylic acids, esters and condensation polymers1 h 45 min of study

This unit is ≈10% of the GCSE Chemistry, across 5 lessons. Full syllabus

Lesson 2 of 5 · Organic chemistry

Alkanes, combustion and cracking

3 quick checks≈2% of the testCore: Core: tested on most papers

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By the end you’ll be able to

define alkanes as saturated hydrocarbons and use the homologous-series pattern for simple alkane formulae and structures
represent methane, ethane, propane and butane using molecular formulae, displayed formulae and simple structural formulae
write and interpret equations for the complete combustion of hydrocarbons to form carbon dioxide and water

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Adaptive questions on alkanes, combustion and cracking.

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explain incomplete combustion in limited oxygen and identify carbon monoxide and carbon, as well as water, as possible products

evaluate the risks and environmental effects associated with combustion products, including carbon monoxide as a toxic gas and carbon dioxide as a greenhouse gas

describe cracking as the thermal decomposition of long-chain hydrocarbons to produce shorter-chain alkanes and alkenes and explain why cracking is economically useful

interpret cracking equations and identify the products formed from a given alkane or longer-chain hydrocarbon

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