Sentence Examples

  • Fluorides can be readily detected by their power of etching glass when warmed with sulphuric acid; or by warming them in a glass tube with concentrated sulphuric acid and holding a moistened glass rod in the mouth of the tube, the water apparently gelatinizes owing to the decomposition of the silicon fluoride formed.
  • On standing, the solution usually gelatinizes, a process accelerated by the addition of an electrolyte.

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