What is acids bases and salts?

Acids, bases and salts are three main categories of chemical compounds. They have certain definite properties which distinguish one class from the other. 

Bases: They are bitter in taste and soapy to touch. Sea water and detergents are some examples of substances that are basic. Many bases are oxide or hydroxide compounds of metals. Bases are compounds which yield hydroxide ion (OH-), when dissolved in water. Bases are corrosive in nature. ,show a pH value of more than 7.Example-NaOH

Acid :It is a compound which yields hydrogen ion (H+), when dissolved in water. Acid is sour to the taste and corrosive in nature. The pH value for acids is less than 7. Generally, all acids readily react with metal to release hydrogen gas. For example, metal zinc reacts with hydrochloric acid to form zinc chloride and hydrogen gas.HCl is an acid.

Salts:These are formed by the combination of acid and base through neutralization reaction. The acidic and basic nature of salts depends on the acid and base combined in neutralization reaction. The pH of a salt solution depends on the strength of acids and bases combined in the neutralization reaction.

Acid Base Salt Example is NaCl.