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A student uses toothpaste to reduce the effect of acid on teeth. Which property of toothpaste causes this effect?

Answer and explanation

Correct answer: It is basic and neutralises the acid.

Toothpaste is generally mildly basic, whereas acids produced by bacterial action on food particles can attack tooth enamel. The basic substances in toothpaste react with and neutralise these acids, reducing their harmful effect. This is an acid–base neutralisation process that produces less acidic products; simple dilution is not the main reason. Therefore, option B is correct.

Related tags

Acids And BasesNeutralisationToothpasteChemical SubstancesAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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