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IB Chemistry SL 1.1.1 Energy Transfer Questions

Use real exam questions to distinguish heat from stored energy, explain non-useful transfers and interpret temperature changes at thermal equilibrium.

Syllabus
First assessment 2025
Course
Chemistry SL
Level
SL

Exam points

  • Identify heat as energy transferred between particles rather than energy stored in a substance.
  • Explain why useful energy is lower than a theoretical value by identifying transfers to the surroundings as heat, sound or friction, or incomplete combustion.
  • Interpret the direction and outcome of energy transfer when a reacting system returns to thermal equilibrium, including the associated temperature change.

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Study 1.1.1—Energy transfer conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Chemistry SL 1.1.1 Energy Transfer Questions question 1

[Maximum number: 1]

The increased concentration of carbon dioxide in the atmosphere is thought to result from the increased combustion of fossil fuels such as petroleum.

Outline why the energy available from an engine will be less than these theoretical values.

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