Free Chemistry Essays
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Essay on the Production of Aluminium
Aluminium is the 3rd most abundant element in the Earth’s crust and is present as 7.3% by mass. In nature it is only stable when bonded to other elements, particularly in the form of silicates and oxides as it is too reactive to occur free in nature. By 1808 its existence was first established and it took many years to release the metal from its ore and many more years to produce a viable, commercial production process. By 1886 Charles Hall discovered a cheap method of extracting aluminium from its ore.
Essay on Amino Acid Metabolism: normal and abnormal
Protein is one of the basic fundamental groups of essential nutrition. As protein is broken down in the body it forms amino acids. There are about 28 commonly known amino acids that are combined in various ways to create proteins. In addition to the amino acids that combine to form the body’s proteins, other amino acids are important in metabolic functions. For example, taurine, citrulline and glutathione may act as neurotransmitters or precursors of neurotransmitters.
