WHAT IS THE DIFFERENCE BETWEEN ATOMS AND MOLECULES AND COMPOUNDS AND PARTICLES AND SUBSTANCES AND MATERIALS?

Asked by Gaurav Avhad | 12th Mar, 2011, 03:28: AM

Expert Answer:

Atoms are the smallest particle of an element and is the unit of chemical reactions.it may or may not have independent existence.
Molecule is the smallest particle of a substance (elment or compound ) which can exit independently.
 
A compound may be defined as the substance obtained by the combination of two or more elements in a definite proportion by mass and can be decomposed by  chemical means into its constituent elements.
Matter , substances are same.

Answered by  | 14th Mar, 2011, 10:44: AM

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