Energy Changes in Reactions · Thermodynamics

Chemical Cells and Fuel Cells

Exploring how chemical reactions can be used to generate a voltage.

Key Questions

  1. 1How does the difference in reactivity between two metals create an electrical potential?
  2. 2What makes a hydrogen fuel cell a more sustainable option than a traditional combustion engine?
  3. 3What are the limitations of current battery technology in terms of energy density and recharging?

National Curriculum Attainment Targets

GCSE: Chemistry - Energy ChangesGCSE: Chemistry - Chemical Cells
Year: Year 10
Subject: Chemistry
Unit: Energy Changes in Reactions
Period: Thermodynamics

Suggested Methodologies

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Exothermic and Endothermic Reactions

Distinguishing between reactions that release energy and those that absorb it from the surroundings.

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Bond Energy Calculations

Using mean bond enthalpies to calculate the overall energy change of a reaction.

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