Why do atoms react with one another to form chemical bonds?

                            OR

 Why do atoms form chemical bonds?

ANSWER:

Chemical bond:

 The attractive force which holds the atoms together to form a compound or molecule is called a Chemical bond.

REASONS:

1.  Every system in the universe tends to lower its energy, in order to attain stability.
2. Water flows from a higher level to a lower level.
3. Similarly, electricity flows from higher potential to lower potential and heat flows from a hot body to a cold body.
4. This happens because both water and electricity are trying to decrease their energy.
5. Atoms in the same way have a tendency to decrease their energy.
6. The energy of isolated hydrogen atoms is higher than the two bonded hydrogen atoms.
7. That is, the combination of atoms gives a stable molecule through the emission of energy.
8. They can decrease the energy by combining with other atoms and forming a chemical bond.

EXAMPLE:

H + H –> H—H –>H₂

Cl +Cl –> Cl—Cl –>Cl₂

CONCLUSION:

It is concluded from the above-mentioned reason that atoms form a chemical bond.

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