GraspIT - AQA GCSE Organic Chemistry - Exam Practice Questions

Sep 5, 2026

Upload by Liam

GraspIT provides a set of AQA GCSE Organic Chemistry practice questions covering key topics across crude oil processing, hydrocarbon properties, cracking, alkenes, alcohols, carboxylic acids, and addition polymerisation. The questions require learners to use chemical formulas and structural diagrams, explain processes such as fractional distillation and fermentation, and write balanced combustion and reaction equations. It also includes conceptual comparisons and identification via chemical tests.

LanguageEnglish

CategoryExam

FormatPDF

Pages7

Reading Time18 min

AccessFree to download

A. Crude Oil, Hydrocarbons and Alkanes

B. Fractional Distillation And Petrochemicals

C. Properties of Hydrocarbons

D. Cracking and Alkenes

E. Structure, Formula And Reactions of Alkenes

F. Alcohols

G. Carboxylic acids

H. Addition polymerisation

GraspIT – AQA GCSE Organic Chemistry A . Crude Oil, Hydrocarbons and Alkanes 1. What is the formula of an alkane with eight hydrogens? Draw its structural formula (2) 2. Describe what crude oil is, how it is made and w hat it is made of. (6) . ............................................................................................................................................ . ............................................................................................................................................ 3. Give the name and formulae for the first two alkanes in the homologous series. (2) B. Fractional Distillation And Petrochemicals 1. Name three of the fractions separated in fractional distillation (3) 2. Explain how fractional distillation separates these fractions. (4) 3. Why are there so many natural and synthetic carbon compounds? (1) . ............................................................................................................................................ GraspIT – AQA GCSE Organic Chemistry 4. Name two materials produced by the petrochemical industry. (2) ............................................................................................................................................. . ............................................................................................................................................ C. Properties of Hydrocarbons 1. Hydrocarbons in crude oil vary in their size. Describe how increasing molecular size of hydrocarbons alters the boiling point, viscosity and flammability of hydrocarbons. (3) . ............................................................................................................................................ . ............................................................................................................................................ 2. Describe what happens to the carbon and hydrogen atoms in a hydrocarbon during combustion. (3) . ............................................................................................................................................ . ............................................................................................................................................ 3. Write the balanced symbol equation for the complete combustion of pentane gas C5 H12 (3) D. Cracking and Alkenes 1. Name two types of cracking and explain why scientists might want to crack hydrocarbons. (4) ............................................................................................................................................. . ............................................................................................................................................ 2. The cracking of hydrocarbons can make alkanes and one other type of chemical. Name this chemical and describe a chemical test that could be used to identify between this chemical and the alkane. Give the positive test result as part of your answer. (3) | . .
. . | .
. | | --- | --- | | . . . | | GraspIT – AQA GCSE Organic Chemistry 3. A scientist carried out an experiment to crack a hydrocarbon, here is the symbol equation for thereaction. The chemical that was cracked was C12H26 . One of the products was C2 H4., hat is the formula of the other product? (2) E. Structure, Formula And Reactions of Alkenes (Chemistry only) 1. Alkenes are hydrocarbons with a double carbon – carbon bond. Give the general formula of the alkenes and explain why they are called unsaturated. (2) . ............................................................................................................................................ . ............................................................................................................................................ 2. Butene is an alkene that contains four carbon atoms. Write out its formu

FAQs

What topics are included in these organic chemistry practice questions?

The questions cover crude oil and hydrocarbons, fractional distillation, hydrocarbon properties, cracking and alkenes, reactions and structures of alkenes, alcohols and fermentation, carboxylic acids reactions, and addition polymerisation.

How do the questions test understanding of hydrocarbons and crude oil?

They ask for formulas and structural diagrams, explanations of how crude oil is formed and what it contains, and descriptions of how changing molecular size affects boiling point, viscosity, and flammability.

What skills are required for cracking, alkenes, and polymerisation questions?

Learners must name cracking types and explain why cracking is done, identify products using chemical tests, write balanced reaction equations, and construct structural formulas and repeating units for addition polymerisation.

Sep 5, 2026

Upload by Liam