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what is the difference b/w a compoundsand molecules?

what is the difference b/w a compoundsand molecules?

Grade:10

1 Answers

Aarti Gupta
askIITians Faculty 300 Points
9 years ago
A compound is defined as a pure substance which can be decomposed into simpler substances by some suitable chemical method.It is formed by combination of two or more elements in a definite proportion by mass..When a compound is formed ,the constituent elements lose their properties.For example water(H2O), is a compound formed by combination of hydrogen and oxygen in the fixed ratio 1:8 by mass.When they combine to form water they lose their individual properties.Like hydrogen is combustible,oxygen is supporter of combustion but water is neither combustible nor supporter of combustion rather it puts off fire.
Molecule is formed by combination of two or more atoms of an element chemically joined together.For example oxygen molecule(O2) is formed by combination of two oxygen atoms.Similarly H2,N2.When different types of atoms combine a compound is formed.Like CO2,H2O,NH3 etc.So a molecule can consist of similar atoms or different atoms.

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