Question

meaning of acid, bases
for class 7

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Answer 1

Answer:

Acid: An acid is any substance that in water solution tastes sour, changes blue litmus paper to red, reacts with some metals to liberate hydrogen, reacts with bases to form salts, and promotes chemical reactions (acid catalysis).

Base: A base is a chemical substance that has a bitter taste and a soapy texture. Bases are found in different substances such as bleach, ammonia, washing powder and soap. Bases are also called Alkaline. Bases turn the color of red litmus paper to blue. Bases lose their basicity when mixed with water.

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