The term "ionization" refers to the use of heat, electricity, chemicals, discharge or radiation in order to transform atoms that are neutral to atoms with either a positive or negative electric charge.
There are lots of different examples of ionization because there are lots of situations where atoms are transformed.
Some examples that you may be familiar with include:
In each of these different situations, the charge of the atoms change as a result of the exposure to other elements or the combination with other elements.
The same process of ionization, the change in charge, as described above can happen when any of the following ionic bonds are created:
Understanding ionization is very important in studying science because ionization explains how the charge of atoms are changed and can help to explain how atoms are transformed. You can observe lots of different examples of ionization in a lab setting and you can see the results both in science and in compounds that you encounter in your life.