1. Periodic Table How to use it…

2. ATOMIC NUMBER: The number of protons in the nucleus. It is the number of protons that identifies the element. 12.011 -4 +2 +4 6 2-4 C AtomicAc number

3. ATOMIC MASS: The sum of the protons and neutrons in the nucleus 12.011 011 -4 +2 +4 6 2-4 C AtomicAc mass

4. NEUTRONS: ROUNDED ATOMIC MASS – ATOMIC NUMBER FOR EXAMPLE…CARBON ATOMIC MASS = 12.011…ROUNDED IS 12 ATOMIC NUMBER = 6 12 – 6 = 6 NEUTRONS ROUNDED ATOMIC MASS ATOMIC NUMBER

5. VALENCE ELECTRONS: Electrons that are involved in transfer or sharing Located in the outer level of the atom Not all electrons in an atom are involved in the sharing or transferring 2 ways to represent the number of valence electrons: The Bohr Model Lewis Structure

6. VALENCE ELECTRONS: 12.011 -4 +2 +4 6 2-4 C Electron configuration

7. PERIODIC TABLE OF ELEMENTS: Organization of the all known elements based on their properties – such as atomic number. 12.011 -4 +2 +4 6 2-4 C Selected oxidation state Atomic Mass Atomic Number Electron Configuration