1. Do Now
Write the following definitions:
Proton:
Neutron:
Electron:

2. Vocab Quiz
8 mins

3. Protons
Charge : positive Location : inside nucleus Relative mass: about 1 amu Facts: The atomic # = the # of protons in the atom Proton # does NOT change for isotopes or ions

4. Neutrons
Charge: Neutral Location: Inside the nucleus Relative mass: about 1 amu Facts: Atomic mass – Atomic # = # Neutrons # of neutrons changes in isotopes

5. Electrons Charges – Negative
Location – orbiting outside the nucleus in electron cloud
Relative mass: 1/2000 amu
Facts: Neutral atom  # of electrons = # of protons
The numbers of electrons changes in ions.

6. Neutral Atoms # of protons is equal to the # of electrons
NO electrical charge (neutral)
Balanced # of Protons and Neutrons

7. Isotope # of protons does NOT change # of electrons does NOT change
# of Neutrons DO change
Atomic mass DOES change

8. Cations
(Positive)
Lost electrons, creating an imbalance of more protons (+) and less electrons (-).
Atoms becomes more positively charged

9. Anion
(Negative)
Gain electrons creating an imbalance of less protons (+) and more electrons (-).
Atom becomes negatively charge