In this case, for the theories describing acids, we say that a Brønsted-Lowry Acid is such substance which is able to donate a H⁺ and a Brønsted-Lowry base is such substance which is able to accept a donated H⁺.
In such a way, since hydronium (H₃O⁺) is a product, meaning that water received one H⁺, we conclude water is acting as a Brønsted-Lowry base. Moreover, ammonium ion acts as Brønsted-Lowry Acid.
A: making s sandcastle. This is because water and sand is only a mixture, so they do not react with each other. All the rest include chemical reactions!
