1. Ms. Knick HAHS IONS AND ISOTOPES

2.  An atom with a charge.  Two types:  Cation = positively charged (Example: Mg 2+ )  Anion = negatively charged (Example: F -1 ) IONS

3.  The charge of an atom affects the number of electrons.  Cations are positive. They are loosing electrons and thereby are becoming MORE POSITIVE.  Anions are negative. They are gaining electrons and thereby are becoming MORE NEGATIVE. IONS AND ELECTRONS

4.  How many protons, electrons, and neutrons?  O 2-  Al 3+  F -  Mg 2+ EXAMPLE

5.  Isotopes are atoms that have the same number of protons but a different number of neutrons.  As a result, isotopes of the same element have a different atomic mass.  This is why the atomic mass, is a decimal number. The atomic mass is an average of all isotopes of a particular element. ISOTOPES

6. ISOTOPES OF HYDROGEN (YOU MUST DRAW THIS-PLEASE COLOR CODE ACCORDINGLY)