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# Atom review

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### Atom review

1. 1. List of topics to know:<br />structure of an atom ( what is looks like and what the subatomic particles are)<br />atom’s nucleus, size and relative mass<br />Atomic number<br />Atomic Mass<br />Atoms, Ions, Isotopes<br />Know how to calculate, p,e, and n, from periodic table<br />
2. 2. Structure of an atom<br />Draw and label<br />
3. 3. atom’s nucleus, size and relative mass<br />NUCLEUS : heavy, small, compact<br />ELECTRON CLOUD: light, wide area<br />
4. 4. Atomic particles<br />The 3 particles of the atom are:<br />a.______________________<br />b.______________________<br />c.______________________<br />Their respective charges are:<br />a.______________________<br />b.______________________<br />c.______________________<br /> <br />
5. 5.
6. 6. NUMBER OF PROTONS=NUMBER OF ELECTRONS<br />
7. 7. Atomic number<br />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. <br />
8. 8. Atomic Mass/Mass number<br />The atomic weight is basically a measurement of the total number of particles in an atom's nucleus.<br />Mass number= round off atomic weight<br />
9. 9. Number of neutrons<br />Mass Number = (Number of Protons) + (Number of Neutrons)<br />
10. 10. IONS<br />POSITIVE ( CATION)<br />NEGATIVE (ANION)<br />
11. 11. ISOTOPE<br />Same element , different neutrons<br />
12. 12. Number of Protons = Atomic Number<br />Number of Electrons = Number of Protons = Atomic Number<br />Number of Neutrons = Mass Number - Atomic Number<br />