An example can be perspiration or even rain.
Hope this helps.
Potassium ......................
Answer:
Pray to ur God to give you some peace
Explanation:
and then listen to some peace full music
I only know that
A substance either an ion or a molecule that can act either an acid or a base depending on a medium is called Amphoteric. Some metals like zinc, tin, copper and aluminium which produce either metal oxides or hydroxides are examples of amphoteric. During the Amphoterism, the metal compound acts either an acid or a base depending on their oxidation state.