AQA GCSE Chemistry — Organic Chemistry and Analysis flashcards
10 of 75 cards free to study here · 2 topics · the whole deck is built into Willys
Topics 4.7 and 4.8 of AQA GCSE Chemistry: crude oil, alkanes, cracking, alkenes, alcohols, carboxylic acids and polymers; purity, formulations, chromatography, gas tests, ion tests and flame emission spectroscopy. Higher Tier and Chemistry-only cards are marked.
Learn deck · part of AQA GCSE Chemistry · written against: AQA GCSE Chemistry (8462) specification, version 1.2, 16 January 2026; Higher Tier and separate-science-only cards marked on the front. Updated 2026-10-10.
Study the free sample
10 cards from the deck as they are. Flip, rate yourself, filter by topic; your progress stays in this browser.
Tap the card or press Space to flip
The 10 sample cards as a list
-
What is crude oil, and how was it formed?A finite resource: a mix of a huge range of compounds, mostly hydrocarbons, formed from ancient biomass, mainly plankton, buried in mud.Organic Chemistry › Crude Oil and Hydrocarbons
-
Is ethanol, C₂H₅OH, a hydrocarbon? Explain.No: a hydrocarbon contains hydrogen and carbon atoms only, and ethanol also contains oxygen.Organic Chemistry › Crude Oil and Hydrocarbons
-
What is the general formula of the alkanes, and what is the formula of the alkane with eight carbon atoms?CₙH₂ₙ₊₂, so the eight-carbon alkane is C₈H₁₈.Organic Chemistry › Crude Oil and Hydrocarbons
-
What are the names and formulae of the first four alkanes?Methane CH₄, ethane C₂H₆, propane C₃H₈ and butane C₄H₁₀.Organic Chemistry › Crude Oil and Hydrocarbons
-
How does fractional distillation separate crude oil into fractions?The oil is heated until it evaporates; the vapour rises up a column that is hot at the bottom and cooler at the top, and each fraction condenses at the level where the temperature falls below its boiling point.Organic Chemistry › Crude Oil and Hydrocarbons
-
What does 'pure' mean to a chemist, and how is that different from 'pure orange juice'?To a chemist, one element or one compound with nothing else mixed in; in everyday use, a natural product with nothing added to it.Chemical Analysis › Purity Formulations and Chromatography
-
A sample of aspirin melts between 128 °C and 133 °C, but pure aspirin melts at about 136 °C. What does this show?The sample is impure: a pure substance melts at a specific temperature, while impurities lower the melting point and spread it over a range.Chemical Analysis › Purity Formulations and Chromatography
-
What is a formulation? Give two examples.A mixture designed as a useful product, with each component in a carefully measured quantity; examples include paints and medicines (also fuels, alloys, fertilisers and foods).Chemical Analysis › Purity Formulations and Chromatography
-
What are the stationary and mobile phases in paper chromatography?The stationary phase is the paper; the mobile phase is the solvent.Chemical Analysis › Purity Formulations and Chromatography
-
Why do different substances travel different distances in paper chromatography?Each substance is distributed differently between the stationary and mobile phases: one that spends more time dissolved in the solvent travels further.Chemical Analysis › Purity Formulations and Chromatography
Unlock the whole deck
You are studying a free 10-card sample. All 75 cards of AQA GCSE Chemistry — Organic Chemistry and Analysis, the other 6 AQA GCSE Chemistry decks, and spaced-repetition scheduling are built into Willys. 14-day free trial, then $14.99 a year.
In Willys, tap Exam Library at the top of your Decks (or Browse Exam Library… under the + button), find the exam on its shelf or by search, tick it and tap Add.
More AQA GCSE Chemistry decks
← All AQA GCSE Chemistry decks, with the study guide and topic outline.
About these cards
Review status: Second-reader reviewed, with corrections applied.
Checked against:
- Topic outline follows the AQA GCSE Chemistry (8462) specification, version 1.2 (16 January 2026) (outline only; no specification text reproduced).
- OpenStax Chemistry 2e, consulted as a reference; no text copied.
- Also checked against PubChem compound records (reference only; no text copied).
These are independent study notes written for Willys. They are not official exam material, may contain mistakes, and are no substitute for your course, your teacher or the exam owner's own publications. Found an error? Tell us — corrections ship as a new version of the deck.
AQA is a registered trademark of AQA Education, which is not affiliated with, and does not endorse, this product.
Use of these pages is covered by our Terms of Use.