Question

define acid and base​

Answer 1

Acids

An acid is a substance that donates protons (in the Brønsted-Lowry definition) or accepts a pair of valence electrons to form a bond (in the Lewis definition).

Bases

A base is a substance that can accept protons or donate a pair of valence electrons to form a bond. Bases can be thought of as the chemical opposite of acids.

Answer 2

Acids are substances that taste sour and are corrosive in nature. These substances are chemically acidic in nature. ... E.g.:-orange juice, curd, vinegar, hydrochloric acid etc..

bases are slippery to the touch and bitter in taste. It turns red litmus paper to blue. These substances are chemically basic in nature. For eg ... calcium carbonate