1: Nomenclature Flashcards
Lesson 1
Nomenclature systems (Brief History)
Before the 1700s, chemicals had names that had nothing to do with their chemical formulas
(water, sugar, ammonia, etc.)
It would now be extremely difficult to learn the names of all the compounds if they all had random and unique names!
Fortunately, the International Union of Physical and Applied Chemistry (IUPAC) has established a logical naming (nomenclature) system
IUPAC system
A universal system of naming compounds.
#1: Ionic Compounds
Naming Ionic compounds
First part of the name comes from the cation
If cation is multivalent, must indicate charge after the name in brackets using Roman Numerals
Second part comes from the anion
If the anion is an element, its name is modified to end in –ide
If the anion is polyatomic, must determine correct name
ammonium is a cation. this is why ionic compounds arent by metal and non-metal. polyatomic changes the number of oxygens
#1 Ionic compounds
Nitrate formula
Naming polyatomic ions
Polyatomic 1
Nitrate: NO3 -
#1: Ionic compounds
Carbonate Formula
Naming polyatomic ions
Polyatomic 2
Carbonate: CO3 2-
#1: Ionic compounds
Flourate, Chlorate, Bromate, Iodate
Naming polyatomic ions
Polyatomic 3
FO3 -, ClO3 -, BrO3 -, IO3 -
#1: Ionic compounds
Sulfate formula
Naming polyatomic ions
Polyatomic 4
Sulfate: SO4 2-
#1: Ionic compounds
Chromate Formula
Naming polyatomic ions
Polyatomic 5
Chromate: CrO4 2-
#1: Ionic compounds
Phosphate Formula
Naming polyatomic ions
Polyatomic 6
Phospate: PO4 3-
#1: Ionic compounds
Cyanide Formula
Naming polyatomic ions
Polyatomic 7
Cyanide CN-
#1: Ionic compounds
Hydroxide Formula
Naming polyatomic ions
Polyatomic 8
Hydroxide: OH-
#1: Ionic compounds
Ammonium Formula
Naming polyatomic ions
Polyatomic 9
Ammonium: NH4 +
#1: Ionic compounds
x+1
Oxygen numbers: Naming polyatomic ions
Oxygens number 1
Per____ate
Ex. Perchlorate (ClO4 -)
#1: Ionic compounds
x
Oxygen numbers: Naming polyatomic ions
Oxygens number 2
____ate
Ex. chlorate (ClO3 -)
#1: Ionic compounds
x-1
Oxygen numbers: Naming polyatomic ions
Oxygens number 3
____ite
Ex. Chlorite (ClO2 -)