Question

What are ions? Are they charged particles or things?

Answer 1

Ions are atoms or a group of atoms that has an electric charge.
A positively charged ion is called a cation and a negatively charged ion is called an anion

Answer 2

A charged particle having unequal number of electrons & protons is called an Ion.
When ion is positive charge it is called cation.
When ion is negatively charged it is called anion.