Introduction to naming chemical compounds
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Introduction to naming Chemical Compounds. So Far We’ve Learned:. Compound are made from ions Formulas start with the cation and end with the anion renamed with “ide” Subscripts determine the number of atoms Polyatomic ions are ions made of many atoms and usually have parenthesis around them.

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So far we ve learned
So Far We’ve Learned:

  • Compound are made from ions

  • Formulas start with the cation and end with the anion renamed with “ide”

  • Subscripts determine the number of atoms

  • Polyatomic ions are ions made of many atoms and usually have parenthesis around them


How are compound named type i ii
How are compound named? (Type I & II)

  • all metals (cations) use the name from the periodic table

  • all non metal ions (anions) use the name from the periodic table changed to “ide”

  • polyatomics don’t change their name

  • transition metals require roman numerals that match thier charge eg. Fe+2 is Iron (II), Fe+3 is Iron (III)


Transition metals

If the positive ion is a transition metal,

the name of the compound MUST include

a Roman Numeral!

Transition Metals

Here’s an example: There are two “iron chlorides”:

FeCl2 is iron (II) chloride

FeCl3 is iron (III) chloride

The Roman Numeral indicates the charge of the metal ion


Type iii
Type III

  • Non metal and non metal (NO IONS)

  • Use prefixes to tell the number of atoms (see chart)

  • No polyatomics


Acids
Acids

  • Always begin with Hydrogen

  • Use a list to name them


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