Atoms


 
 
Concept Explanation
 

Atoms

ATOMS: Atoms are the smallest particles of an element which may have or may not have independent existence but take part in a chemical reaction. These are the building blocks of all matter. E.g. atoms of hydrogen, oxygen, nitrogen etc., are not capable of independent existence whereas atoms of helium, neon etc., are capable of existing independently. 

Sample Questions
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Question : 1

Which of the following are formed by the two different atoms?

(a) Water

(b) Gold

(c) Salt

(d) Iron

Right Option : B
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Question : 2

Which of the following metal can sometimes be found in free state ?

 

Right Option : C
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Question : 3

  ____________ are the smallest particles of an element which may have or may not have independent existence but take part in a chemical reaction

Right Option : D
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