1. Chemical Nomenclature
Sodium chloride NaCl
Carbon dioxide CO2
Chemical Nomenclature
Copper(II) chloride CuCl2
Naming compounds and
writing the formulas of compounds

2. Interpreting Chemical Formulas
CuN2O6

3. Atoms in Formulas C2H4 Mg(CN)2 C: Mg: H: C: N: Na3(PO4)3 Fe2(SO4)3
Na: Fe:
P: S:
O: O: 2 1 2 4 2 3 2 3 3 12 12

4. Foundations for Understanding Nomenclature and Formulas
Understanding Nomenclature and Formulas Requires a Basic Understanding of Chemical Bonding
Understanding Chemical Bonding Requires some basic knowledge of the of the Structure of Atoms and the Periodic Table!
A key idea in this unit is the power of organizing information in a way that enables us to easily to see patterns and trends.

5. Why doesn’t the periodic table list the elements in alphabetical order?

6. The Periodic Table of the Elements
Elements are arranged in order according to the number of PROTONS (atomic #).
Periodic Table is organized into 7 rows or PERIODS
and 18 vertical columns called GROUPS or FAMILIES

7. Ar Ca He Cl F Li Ne K Na

8. Li F Ar Cl He Na Ne K Ca

9. Neon Argon Lithium Helium Sodium Group A Group B Group C Group D
Beryllium
Fluorine
Helium
Neon
Sodium
Magnesium
Chlorine
Potassium
Calcium
Bromine
Argon

10. Chemical Behavior of Families
Link to Alkali metals
Alkali metals and chlorine
Link AE metals
Chemical Behavior of Families
Link to Halogen video
Link to noble gases

11. MOST IMPORTANT PRINCIPLE OF ORGANIZING ELEMENTS ON PERIODIC TABLE:
Elements in the same family (group or vertical column) will always have similar chemical and physical properties.

12. Example: Group 8A (Family 18) NOBLE GASEs
All elements of this family are chemically unreactive gases.

14. Xe Cs Sr Si Ga 5) Chemically unreactive?
6) Highly reactive, similar to K?
7) Similar to Ca?
8) Similar to C?
9) Similar to Al? Cs Sr Si Ga

15. 7 diatomic elements – memorize for testH2 N2 O2 F2
Cl2
Br2 I2
“HOFBrINCl”

16. Staircase dividing Metals and Nonmetals
RIGHT
LEFT

18. METALS Metals: found to the LEFT of the staircase.
In reactions with nonmetals tend to lose electrons to form + ions.

19. NONMETALS Found to the RIGHT of the staircase.
In reactions with metals, nonmetals GAIN electrons to form negative ions.

20. Metals and Nonmetals
METALS - Shiny, easily shaped, excellent conductors of heat and electricity
NONMETAL -Lack metallic properties