Question

what are the different's between mixture , compound and element ?

Answer 1

Mixture-It is made up of two or more elements or compounds mechanically mixed together in any proportion,such that its properties are those of its constituents.
Compound-A substance formed by the chemical union of two or more elements ,united in a definite proportion by mass
Element-It is a pure substance which cannot  be decomposed into simpler substance by ordinary chemical means.

Answer 2

mixture-- made by mixing two or more compounds or elements physically but not chemically
compounds-- made by adding two or more elements chemically
element-- different types of smallest particles which has their own and seperate properties