How is molecules are formed and can you give me an example

Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms. An example would be (oxygen and chlorine)

When two or more atoms chemically bond together, they form a molecule.

Atoms are the building blocks of matter, which is why they are so important!

Sometimes the atoms are all from the same element ... In a covalent bond, electrons are shared between atoms. The bonds between the two hydrogen atoms and the oxygen atom in a molecule of water are covalent bonds.

Explanation:

Examples:

H2O (water)

N2 (nitrogen)

O3 (ozone)