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Chemical Names and Formulas

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Presentation on theme: "Chemical Names and Formulas"— Presentation transcript:

1 Chemical Names and Formulas
Overview •Metals and Non-Metals •Types of Compounds •Writing Names and Formulas

2 Naming Compounds Tutorial
General Information Binary Ionic Compounds Ternary Ionic Compounds/Poly-atomic Ions Naming w/metals that have more than 1 charge (Transition Metals)

3 Metals and Nonmetals Stairway Of Division on Periodic Table
C, P, Se, I, Rn and to the right are non- metals B, Si, As, Ge, Sb, Te, Po, At are semi- metals All others are metals

4 Ions Cations Positively Charged Atoms i.e. Na+ Anions
Negatively Charged Atoms i.e. Cl-

5 IONIC CHARGES Group I -> Group II -> Group III ->
Group IV -> 1+ 2+ 3+ 4+

6 IONIC CHARGES Group V -> Group VI -> Group VII ->
Group VIII -> 3- 2- 1- Noble Gases

7 TYPES OF COMPOUNDS Ionic Compounds negative ions.
• composed of positive and negative ions. • usually formed from a metal and non-metal.

8 TYPES OF COMPOUNDS Ionic Compounds • Examples NaCl CaBr2 KI

9 NAMING COMPOUNDS Your ability to name compounds and write formula’s hinges on your ability to recognize whether a compound is Ionic or Molecular.

10 BINARY IONIC COMPOUNDS
Binary means 2 elements Ionic means a metal and a non-metal (or cation and anion) Writing Formulas • charges must balance so compound charge is neutral.

11 BINARY IONIC COMPOUNDS
Writing Formulas from Names • 1st word = CATION • 2nd word = ANION name with ide ending.

12 BINARY IONIC COMPOUNDS
NaBr MgF2 Sodium Bromide Magnesium Fluoride

13 BINARY IONIC COMPOUNDS
Potassium Chloride Aluminum Oxide • notice ending of name is ide! K+Cl- -> KCl Al23+O32- -> Al2O3

14 Polyatomic Ions Definition •tightly bound groups of atoms that behave as a unit and carry a charge. Example SO32-, NO2-, ClO2-

15 TERNARY IONIC COMPOUNDS
Ternary means 3 different elements Usually contain Poly-atomic Ions Ionic means cation and anion

16 TERNARY IONIC COMPOUNDS: Writing Formulas
Ca2+CO32- -> CaCO3 Calcium Carbonate

17 TERNARY IONIC COMPOUNDS: Naming
Calcium Nitrate Ca(NO3)2

18 Naming with Transition Metals
First word = CATION Second word = ANION • You need to determine what charge is on the transition metal if more than one exists.

19 Naming Transition Metals
Copper (I) Oxide Cu2O

20 Writing Formulas with Transition Metals
FeCl3 FeCl2 Iron (III) Chloride Iron (II) Chloride


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