Define Elements B Compounds

Define : (a) Elements (b) Compounds. Name the particles from which elements and compounds are made of.

Answers:

(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.