ATOMIC Structure and ATOM Atom is the smallest particle of an element. It consists of a nucleus, which is composed

MATTER Anything which occupies space and has mass is known as matter. For eg, air, water, milk, hydrogen. Everything around

Increase in the concentration of carbon dioxide in the air is one of the major causes of global warming. When

ACIDS Acids are those substances which have a sour taste and can turn blue litmus red. BASES Bases are those

POLYMERS Polymers can be defined as the high molecular mass macromolecules that are formed due to the repetition of the

What is water pollution? The contamination of water with unwanted and harmful substances is called water pollution. The sources of