Question

write short note about (a) elements (b) compound
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Answer 1

Explanation:

(a) Elements : An element is defined as a pure substance made up of only one kind of atoms that cannot be converted into anything simpler than itself by any physical or chemical process.

(b) Compounds : Compounds are pure substances composed of two or more elements in definite proportion by mass and has a definite set of properties. Compound is made up of only one kind of molecules.

Answer 2

Explanation:

:- An element is a pure chemical substance made of same type of atoms. These are represented using symbols. There are 117 elements and they can be classified as metals, non metals and metalloid.

:- A compound contains atoms of different elements chemically combined together in fixed ratio. These are represented using formulas.There are uncountable compounds.

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