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Molecular size and physical properties

Molecular size and physical properties

Comparison of a small hydrocarbon with lower boiling point, lower viscosity and higher flammability, and a large hydrocarbon with higher boiling point, higher viscosity and lower flammability

A hydrocarbon molecule becomes larger as it contains more carbon and hydrogen atoms. Increasing molecular size causes its boiling point and viscosity to increase.

7.1.3 Properties of hydrocarbons Lesson

  1. GCSE
  2. /Chemistry
  3. /7.1.3 Properties of hydrocarbons

Step-by-step lessons covering AQA GCSE Chemistry 7.1.3 Properties of hydrocarbons for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.

Lessons