Here's a breakdown:
* Gaining electrons: An atom that gains electrons becomes a negatively charged ion, also called an anion. The atom now has more electrons than protons, resulting in a net negative charge.
* Losing electrons: An atom that loses electrons becomes a positively charged ion, also called a cation. The atom now has fewer electrons than protons, resulting in a net positive charge.
Key points:
* The number of protons in an atom's nucleus defines its atomic number and determines what element it is. This number does not change when an atom becomes an ion.
* Ions are essential for chemical reactions and the formation of many important compounds. They are present in everything from electrolytes in our bodies to the salt we use in our food.
Let me know if you'd like to explore specific examples of how ions form!
