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Silicon dioxide (as an electrical insulator), and as components in the food and pharmaceutical industries. Inhaling finely divided crystalline silica is toxic and can
Chemistry like alcohol, sugar, gasoline, and the various pharmaceuticals. However, not all substances or chemical compounds consist of discrete molecules, and indeed
Sodium Sodium is a chemical element with symbol Na (from Latin natrium) and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an
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