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    • A selection of oranges and Toothpaste squeezed out of tube.
    Rights: The University of Waikato Te Whare Wānanga o Waikato Published 7 April 2021 Size: 3 MB Referencing Hub media

    Citrus fruits contain citric acid. Toothpaste is a weak base. Toothpaste neutralises the acids in foods and protects tooth enamel.

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      ARTICLE

      Acids and bases – introduction

      From our bodies to our Earth’s oceans and rocks, acids and bases play an important role in our lives and the environment around us. If you have tasted lemon juice or washed your hands with soap ...

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