Key term for AQA GCSE Chemistry, used in Cells and Batteries.
The gain of electrons by a substance; in a fuel cell, oxygen undergoes reduction at the positive electrode.
Reduction appears in AQA GCSE Chemistry revision content for Energy changes, especially Cells and Batteries and Hydrogen Fuel Cells.
Energy changes
Cells and Batteries • Hydrogen Fuel Cells
Chemical changes
Electrolysis • Electrolysis of Aqueous Solutions
Chemical changes
Electrolysis • Electrolysis of Aluminium
Chemical changes
Electrolysis • Electrolysis of Molten Compounds
Chemical changes
Electrolysis • Electrolysis Principles
Chemical changes
Metal Reactivity • Oxidation of Metals
Key ideas
Fundamental Principles • Core Chemical Concepts
Using resources
Material Properties • Corrosion and Prevention
Using resources
Life Cycle Assessment and Recycling • Reduce, Reuse, and Recycle
Atomic structure and the periodic table
The Periodic Table • Group 7 Halogens
Atomic structure and the periodic table
Atomic Model and Isotopes • Atoms, Elements, and Compounds
Chemical changes
Electrolysis • Electrode Half Equations
Chemical changes
Acid Reactions • Acids and Metals
Chemical changes
Metal Reactivity • Redox and Electrons
Chemical changes
Metal Reactivity • Metal Extraction
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