Atoms which lose electrons and become electrically charged are called cations.

Here's why:

* Electrons: These are negatively charged particles that orbit the nucleus of an atom.

* Losing Electrons: When an atom loses electrons, it loses some of its negative charge.

* Cations: Since the atom now has more protons (positive charge) than electrons (negative charge), it carries a net positive charge and is called a cation.

Let me know if you'd like more details about atoms, ions, or the process of ionization!