Compound names

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Compound names Formulas

• Chapter 5

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Naming Ionic Compounds(Type I)

• The metal is always named first and the nonmetal
  second
• The name of the first symbol takes its name from
  the name of the element. Example Na is called
  sodium
• The name of the second symbol takes the first
  part of the element name and adding an ide.
• Example Cl- is called chloride

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Naming Ionic Compounds(Type I)

• Exceptions!!!
• Polyatomic ions already have specific names, so
  just name them that way.
• Example NH4 is called ammonium

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Name the following

• CaCl2
• Al2O3
• BaF2
• Li2O
• CaCO3
• KNO3
• NaF

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Naming Covalent Compounds (Type III)

• These contain only NONMETALS
• The first element in the formula is named first
  and the full name is used.
• The second elements name ends in ide.
• Prefixes are used to denote the numbers of atoms
  present.

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Naming Covalent Compounds (Type III)

• Prefixes
• mono 1 hexa 6
• di 2 hepta 7
• tri 3 octa 8
• tetra 4 nona 9
• penta 5 deca 10

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Name the following

• BF3
• N2O4
• H2O
• CO2
• SiI4
• PCl3

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Naming Ionic Compound w/ Transition Metals (Type
II)

• The metal is always named first and the nonmetal
  named second
• Because the metal can assume more than one
  charge, is specified by a Roman in parentheses
• Example FeCl2 Iron(II) chloride
• HINT the number after the nonmetal usually
  becomes the Roman numeral

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Name the following

• CuCl
• HgO
• Fe2O3
• MnO4
• PbCl4

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Writing Ionic Formulas(swap and drop)

• The () ion is written first, then the (-) ion
• Find the charges of the ions
• -Look at the group
• -Look at the roman numeral after the element
  (transition metals)
• Write ions and their charges
• Swap drop charges, making them subscripts.

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Examples

• Magnesium chloride
• Aluminum oxide

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Examples

• Calcium sulfide
• Lead (IV) oxide

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Examples

• Sodium sulfate
• Ammonium carbonate

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Naming Acids

• Acids contain hydrogen (H ions in solution)
• ALL compounds beginning with hydrogen are acids
• To name acids, you have to look at the anion
  (negative one!)

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Acid contains no oxygen

• Acid begins with hydro-
• Ends in ic
• The middle contains the base name of the anion
• Hydro_(anion)_ic
• Example HCl Hydrochloric acid

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Acid contains oxygen

• Check the name of the anion (it will be a
  polyatomic ion)
• If it ends in ite (i.e. nitrite)
• - use the root name of the polyatomic ion
• - ends in ous
• Example HNO2 Nitrous Acid

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Acid contains oxygen

• If it ends in ate (i.e. nitrate)
• -use the root name of the polyatomic
• ion
• -ends in ic
• Example HNO3 Nitric Acid