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One term, and every place the course uses it — the revision notes that teach it, the multiple choice questions that check it, and the detailed questions that examine it.
15 sub-topics use electrolysis
AQA · Chemistry · 4.4 Chemical changes
4.4.3Electrolysis
positive electrode (the anode). Ions are discharged at the electrodes producing elements. This process is called electrolysis. Electrolyte A molten or dissolved ionic compound in which the ions are free to move, so it conducts electricity
in The process of electrolysis and 5 other sections
AQA · Chemistry · 4.4 Chemical changes
4.4.1Reactivity of metals
oxide; iron is less reactive than carbon, so it can be. Aluminium must be extracted by electrolysis instead. Explain why aluminium cannot be extracted by heating its oxide with carbon, but iron can. Extraction of metals
in Extraction of metals and reduction
AQA · Chemistry · 4.10 Using resources
4.10.1Using the Earth's resources and obtaining potable water
example, copper can be obtained from solutions of copper compounds by displacement using scrap iron, or by electrolysis. You should be able to evaluate alternative biological methods of metal extraction, given appropriate information. The advantages
in Alternative methods of extracting metals
AQA · Chemistry · 4.10 Using resources
4.10.2Life cycle assessment and recycling
Used in 4 questions on this sub-topic.
AQA · Chemistry · 4.5 Energy changes
4.5.2Chemical cells and fuel cells
fuel to store Where the energy comes from Hydrogen is often made from fossil fuels or by electrolysis, which needs energy The electricity used to recharge may come from fossil fuels Infrastructure Few refuelling stations exist
in Fuel cells
AQA · Chemistry · 4.10 Using resources
4.10.4The Haber process and the use of NPK fertilisers
Used in 3 questions on this sub-topic.
AQA · Chemistry · 4.2 Bonding, structure, and the properties of matter
4.2.3Structure and bonding of carbon
Used in 3 questions on this sub-topic.
AQA · Chemistry · 4.1 Atomic structure and the periodic table
4.1.1A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes
Used in 5 questions on this sub-topic.
AQA · Chemistry · 4.8 Chemical analysis
4.8.2Identification of common gases
solution of a reactive metal's compound is electrolysed. Oxygen appears at the anode in the electrolysis of aqueous solutions without halide ions, and when hydrogen peroxide decomposes. Carbon dioxide appears whenever a carbonate meets
in Test for chlorine
AQA · Chemistry · 4.3 Quantitative chemistry
4.3.3Yield and atom economy of chemical reactions
Used in 2 questions on this sub-topic.
AQA · Chemistry · 4.8 Chemical analysis
4.8.1Purity, formulations and chromatography
Used in 1 question on this sub-topic.
AQA · Chemistry · 4.9 Chemistry of the atmosphere
4.9.2Carbon dioxide and methane as greenhouse gases
Used in 1 question on this sub-topic.
AQA · Chemistry · 4.10 Using resources
4.10.3Using materials
Used in 3 questions on this sub-topic.
AQA · Chemistry · 4.4 Chemical changes
4.4.2Reactions of acids
Used in 1 question on this sub-topic.
AQA · Chemistry · 4.8 Chemical analysis
4.8.3Identification of ions by chemical and spectroscopic means
Used in 1 question on this sub-topic.