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Reactivity 1.2.3—Standard enthalpy changes of combustion, ΔHc⦵, and formation, ΔHf⦵, data are used in thermodynamic calculations.

Experiments

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

Energy Content of Fuels

Experiment #17 from Chemistry with Vernier

In this experiment, you will

  • Compare the heat of combustion for paraffin wax and ethanol.
  • Calculate the heat of combustion and percent efficiency for both fuels.

Food is Fuel

Experiment #01 from Food Chemistry Experiments

  • Determine the energy released from various foods as they burn.
  • Look for patterns in the amounts of energy released during burning of different foods.

Educational Standard
International Baccalaureate (IB) 2025
Subject
Chemistry
Organizing concepts
Reactivity 1. What drives chemical reactions?
Subtopics
Reactivity 1.2—Energy cycles in reactions
Level
Additional higher level

* 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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