Question

a short introduction on " classification of materials based on elements , compounds , mixtures . please urgent.

Answer 1

Answer:

ELEMENTS are the substances which cannot be broken down into simpler substances. For eg. Copper, oxygen, mercury, hydrogen etc.

COMPOUNDS have fixed composition and can be broken down into elements by chemical or electrochemical reactions. For eg. water, methane, salt etc.

MIXTURES are the substances which have no fixed composition. It has variable composition. Elements or compounds just mix together to form mixture. Eg. Alloys.