Metal Flux Synthesis Media for Magnetic Compounds
Early rare earth metals (La, Ce, Pr, Nd) combined with late first row transition metals (Fe, Co, Ni) can produce low melting eutectic mixtures. For instance, a 75:25 mole percent mixture of La and Ni forms a eutectic that melts at 532 õC. We are inv....
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Constructing Chemical Formulas
An introduction to constructing and recognising chemical formulas. Using 20 well-known elements, the valency-rules which govern the atomic ratios are explained and used with several examples.
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An introduction into the writing down of fully balanced chemical equations. The process is explained starting with word equations, finding all the relevant formulas and then working with some useful rules for finding the correct coefficients in the b....
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The concept of oxidation and reduction is explained and generalised using oxidation numbers with ionic and covalent examples. Several equations are balanced, using the oxidation number method to fix various atomic ratios.
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We are faced with energy challenges and the promise of power with hydrogen. The fuel cell and solid state hydrogen storage methodologies are currently limited by materials and represent the cutting edge of energy technology. Implementation to a real ....
More details | Watch nowSynthesis of Stable, Water Soluble Gold Colloids
Ligand exchange reactions were utilized in the production of aggregation-resistant gold nanoparticles, having an average diameter of 5 nm, comprising a gold core capped with a mixed shell of citrate and zwitterionic ligands. The prepared nanoparticl....
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Development of the ideas which persuaded us to accept the theory of atoms and molecules as constituents of matter.
More details | Watch nowThe Discovery of Element 101
A first-hand interview of the moment of this discovery from Greg Choppin who worked with Glen Seaborg.
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