1. Subatomic Particles Notes 9/14/12

2. Warmup: Name the scientist who best fits the drawing.

3. Agenda Turn in homework (Book work from Chpt 4)
Subatomic Particles Notes
Examples
Start practice worksheet
NO HOMEWORK this weekend

4. Positive Neutral Negative
Subatomic Particles
Proton
Neutron
Electron
Charge
Mass (relative)
Symbol
Location of particle in the Atom
Positive Neutral Negative
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p+ n e-
At the center of the atom within the nucleus
At the center of the atom within the nucleus
In orbitals surrounding the nucleus

5. Same as protons (in a neutral atom) Mass Number – Atomic Number
Subatomic Particles
Proton
Neutron
Electron
How amount of particles is determined
How atom changes if amount of particles is changed
Same as protons (in a neutral atom)
Mass Number – Atomic Number
Atomic Number
Changes the type of ion (charged atom)
Changes the type of element
Changes the type of isotope

6. Add to the Bottom Atomic Number = Number of Protons
Mass Number = # Protons # Neutrons
Atomic Symbol = Letters from the Periodic Table

7. Practice Examples Practice Worksheet
Protons, Neutrons, and Electrons Practice Worksheet