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Naming Chemicals

Topic Review on "Title":

Chemical formulas are named with rules according to the type of molecule.

Type 1: Binary Ionic
Between a metal and a non-metal—one element of each type.  Write the name of the first element (the metal) and then the name of the second element with “-ide” replacing the last syllable.  Subscripts are not important when using this type

Type 2: Polyatomic Ionic
It will contain more than 2 elements—with at least one being a metal and one being a non-metal.  Write the name of the first element or polyatomic ion.  Write the name of the second element or polyatomic ion.  If the anion is an element, change the ending to “-ide”; if the anion is a polyatomic ion, do not change the ending.  Polyatomic ions must match exactly—including the subscripts.  If there are parenthesis, the polyatomic ion is inside the parenthesis.

Type 1 or 2 with Multivalent Metals
They’ll start with Co, Cr, Cu, Fe, Hg, Pb, Sn.  Multivalent metals are metals that have more than one possibility for the charge.  The name of the metal is written, followed by roman numerals in parenthesis indicating the charge of the metal.  The charge is determined by knowing the charge of the anion and knowing that the overall charge of the molecule is 0.  The name of the anion is written—changing the ending of a single element anion to “-ide.”

Type 3: Binary Covalent
Between two non-metals.  Write the name of the first element with a prefix indicating the subscript (do not use “mono-“ with the first element).  Write the name of the second element with a prefix indicating the subscript and “-ide” as the ending syllable.

Type 4: Acids
The cation for an acid is H+.  The name is based on the anion.  A single element anion is named as “hydro____ic acid”; a “___ate” polyatomic anion is named as “___ic acid”; a “___ite” polyatomic anion is named as “___ous” acid.

Rapid Study Kit for "Title":
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"Title" Tutorial Summary :

It is critical to be able to write and read chemical formulas to function in a chemistry course.  This tutorial introduces 4 different types of chemical formulas and gives instruction on how to recognize and name each type.

Tutorial Features:

Specific Tutorial Features:

  • Nomenclature is broken down into separate types
  • Organizational chart at end to guide type selection

Series Features:

  • Concept map showing inter-connections of new concepts in this tutorial and those previously introduced.
  • Definition slides introduce terms as they are needed.
  • Visual representation of concepts
  • Animated examples—worked out step by step
  • A concise summary is given at the conclusion of the tutorial.

"Title" Topic List:
  • Naming chemical formulas
    • Binary Ionic
    • Polyatomic Ionic
    • Ionic with multivalent metals
    • Binary Covalent
    • Acids

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