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  • Structure 2.2.8—The nature of the force that exists between molecules is determined by the size and polarity of the molecules. Intermolecular forces include London (dispersion), dipole-induced dipole, dipole–dipole and hydrogen bonding.

Structure 2.2.8—The nature of the force that exists between molecules is determined by the size and polarity of the molecules. Intermolecular forces include London (dispersion), dipole-induced dipole, dipole–dipole and hydrogen bonding.

Experiments

Here are experiments our science specialists have selected to support this IB* topic.

Evaporation and Intermolecular Attractions

Experiment #9 from Chemistry with Vernier

In this experiment, you will

  • Study temperature changes caused by the evaporation of several liquids.
  • Relate the temperature changes to the strength of intermolecular forces of attraction.

Accelerant Evaporation

Experiment #1 from Forensic Chemistry Experiments

  • Identify the likely accelerant used in an arson.
  • Justify your solution, based on evaporation rate.
  • Understand that evaporation rate is a characteristic property of a liquid related to intermolecular forces

Educational Standard
International Baccalaureate (IB) 2025
Subject
Chemistry
Organizing concepts
Structure 2. Models of bonding and structure
Subtopics
Structure 2.2—The covalent model
Level
Standard level and higher level
See all Chemistry topics

* The IB Diploma Program is an official program of the International Baccalaureate Organization (IBO) which authorizes schools to offer it. The material available here has been developed independently of the IBO and is not endorsed by it.

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