Define atom and molecule? Give examples.
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Answer:
an atom is the smallest part of an element that takes part in chemical reaction.
a molecule is the smallest part of an element lr a compound that is capable of independent existence.
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Explanation:
Matter is made up of tiny particles called atoms.
An atom is the smallest particle in a matter that exhibits all the properties of that matter. They do not have independent existence.
For example - Hydrogen (H), Iron (Fe), etc.
As atoms do not have independent existence. So they combine with each other to form another tiny particle called molecules. They have independent existence.
For example- Oxygen (O2), Water (H2O), etc.
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