1. The Periodic Table

2. Element: An element is a substance that is made entirely from one type of atom
Ex: oxygen, helium, sodium

3. 3 subatomic particles found in all atoms:
Proton (+)
Neutron ( no charge)
Electron (-)

4. Recall- Proton (+) Neutron ( no charge) Electron (-) nucleus
Moving about outer region

5. Subatomic Particles:

7. The periodic table:
Atomic Number = number of protons

8. The periodic table: Atomic Number = number of protons
Number of protons = number of electrons

9. The periodic table:
Atomic mass = number of protons + neutrons

10. Video; chart