The Periodic Table.

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Presentation transcript:

The Periodic Table

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

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

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

Subatomic Particles:

The periodic table: Atomic Number = number of protons

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

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

Video; chart