Chemistry Topic Practice
Properties of Alkanes | GCSE Chemistry Practice
The properties of hydrocarbons change as the size of their molecules increases.
How does the viscosity of an alkane change as the chain length increases?
What is Properties of Alkanes | Practice?
"The physical characteristics of saturated hydrocarbons, which vary predictably with molecular size."
Trend Essentials
Short chains: Low boiling point, high flammability, low viscosity (runny).
Long chains: High boiling point, low flammability, high viscosity (thick).
Flammability: How easily the hydrocarbon ignites.
Viscosity: How easily the liquid flows.
Exam Tip
Industrial Link: Short-chain alkanes are in high demand as fuels because they are easy to ignite.
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