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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 lead
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
Chemistry like alcohol, sugar, gasoline, and the various pharmaceuticals. However, not all substances or chemical compounds consist of discrete molecules, and indeed
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