IB Chemistry SL Reactivity 1.1.1 Energy Transfer

Practise tracking energy between a reacting system and its surroundings while total energy remains conserved. Distinguish heat transfer from temperature, interpret the direction…

Syllabus
First assessment 2025
Objective
1.1.1
Level
SL

Exam points

  • identify the direction of heat transfer as a system and surroundings regain equilibrium
  • rearrange q = mcΔT to determine heat, mass, temperature change or heat capacity
  • explain a practical energy shortfall by naming heat, sound, friction or incomplete reaction

1.1.1—Energy transfer 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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