1. List of topics to know: structure of an atom ( what is looks like and what the subatomic particles are) atom’s nucleus, size and relative mass Atomic number Atomic Mass Atoms, Ions, Isotopes Know how to calculate, p,e, and n, from periodic table

2. Structure of an atom Draw and label

3. atom’s nucleus, size and relative mass NUCLEUS : heavy, small, compact ELECTRON CLOUD: light, wide area

4. Atomic particles The 3 particles of the atom are: a.______________________ b.______________________ c.______________________ Their respective charges are: a.______________________ b.______________________ c.______________________

6. NUMBER OF PROTONS=NUMBER OF ELECTRONS

7. Atomic number The atomic number tells you the number of ______________________in one atom of an element. It also tells you the number of _____________________in a neutral atom of that element. The atomic number gives the “identity “ of an element as well as its location on the Periodic Table. No two different elements will have the _____________ atomic number.

8. Atomic Mass/Mass number The atomic weight is basically a measurement of the total number of particles in an atom's nucleus. Mass number= round off atomic weight

9. Number of neutrons Mass Number = (Number of Protons) + (Number of Neutrons)

10. IONS POSITIVE ( CATION) NEGATIVE (ANION)

11. ISOTOPE Same element , different neutrons

12. Number of Protons = Atomic Number Number of Electrons = Number of Protons = Atomic Number Number of Neutrons = Mass Number - Atomic Number