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Element : robert boyle defined element as any substance that cannot be decomposed into further simple substance by a physical or chemical change 

example: hydrogen.helium etc..,

Compound : a thing that is composed of two or more separate elements; a mixture.
example: Nacl,etc..,
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Element - a particle which cannot be broken into simplier substances physically or chemically is called an element.
ex - oxygen,hydrogen etc..
compound - a combination of 2 or more elements or compounds is called a compound.

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