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Metals and ICP spectroscopy
On a recent visit to the Science Museum in London I came across this interesting exhibit. It is some slivers of aluminium that were made in 1855 by reducing the aluminium ions in cryolite with sodium...
eBook
Catalysts questions
1. Catalytic converters used in automobiles typically contain platinum, palladium and/or rhodium metal coated onto a honeycomb ceramic surface. They convert oxides of nitrogen, NOx, carbon monoxide and...
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MC test: Catalysts
To give your students access to this page you will need to change the default access from "OFF" to "ON". Use the following 'quiz' to test your knowledge and understanding of this sub-topic. As this relates...
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Metals & ICP spectroscopy answers
1. (a) Alumina melts at 2045 oC. The molten solution of alumina in cryolite melts at about 950 oC so much less energy is needed to obtain liquid aluminum(III) ions. (b) Cathode (−) : Al3+(l) + 3e− ⟶ Al(l)Anode...
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Metals & ICP spectroscopy questions
1. Aluminium is produced by electrolysing a molten solution of alumina, Al2O3, in cryolite, Na3AlF6, using graphite electrodes. (a) Explain why a molten solution of the alumina dissolved in cryolite is...
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MC test: Metals & ICP spectroscopy
To give your students access to this page you will need to change the default access from "OFF" to "ON". Use the following 'quiz' to test your knowledge and understanding of this sub-topic. As this relates...
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Materials science introduction answers
Answers to Materials science introduction questions. 1. (a) Copper is much lower in the electrochemical series (E⦵ = + 0.34 V) compared to tin (E⦵ = − 0.14 V) so is less reactive than tin, i.e. less readily...
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MC test: Introduction to materials science
To give your students access to this page you will need to change the default access from "OFF" to "ON". Use the following 'quiz' to test your knowledge and understanding of this sub-topic. As this relates...
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Materials science introduction questions
1. Elemental copper does occur in nature, but copper is mainly extracted from its sulfide, carbonate or oxide minerals. Tin does not occur naturally in the elemental state. The main ore of tin is cassiterite,...
Delivering the programme
R3.4 (AHL) Electron-pair sharing reactions
This large AHL sub-topic covers Lewis acids and bases and the formation of coordination bonds. This is followed by considering the role of nucleophiles in organic substitution reactions, where the rate...