While brushing with fluoride toothpaste and flossing are non-negotiable, using mouthwash isn’t quite as essential. Think of it as a way to enhance your oral care routine, says Dr. Chris Salierno ...

The solution turns brown. This brown colour is the displaced bromine. The chlorine has gone to form sodium chloride.

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Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Praha 8, Czech Republic ...