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Chemistry · Paper 2 · Foundation + Higher · C7

Chain length and fuel properties

Key ideas1 of 3

Three trends to learn

As hydrocarbon molecules get larger, their boiling points increase, their viscosity increases, and their flammability decreases. Compare similar hydrocarbons in the same family.

For increasing size in an alkane family: boiling point increases, viscosity increases and flammability decreases.

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Foundation + Higher · C7. All C7 lessons are shared by Foundation and Higher Tier.

AQA Combined Science Trilogy 8464 · 5.7.1.3. Original notes, questions and diagrams. Models are simplified, not to scale; illustrative data are labelled.