Chemical Nomenclature Flashcards
the charge that an atom has or appears to have when certain arbitrary rules are applied
Oxidation Number/ Oxidation State
oxidation numbers are useful in identifying atoms that are…
oxidized or reduced
loss of electrons
oxidized
gain of electrons
reduced
Based on the first rule, when will any element have an oxidation number of zero
free state
Based on the second rule, what generally haves positive oxidation numbers
metals
Based on the third rule, what is the general oxidation number of hydrogen in a compound or an ion
+1
What is the exception to the third rule which has an oxidation number of -1
a metal hydride when hydrogen is second in the formula
Based on the fourth rule, the oxidaiton number of ____ in a compound or an ion is generally -2
oxygen
What is the exception to the fourth rule
peroxide where it is -1
Based on the fifth rule, the oxidation number of monoatomic ion is the same as the charge of an…
ion
Based on the sixth rule, the algebraic sum of the oxidation of numbers for all the atoms in a compound must equal…
zero
Based on the seventh rule, the algebraic sum of the oxidation numbers for all the atoms in a ______ must equal the charge on the ion
polyatomic ion
In the first step of finding the oxidation number for an element within a compound, where should the oxidation number of each known element be written?
below the atom in the formula
________ each oxidation number by the number of atoms of that element in the compound.
Multiply
Write an equation indicating the ___ of all oxidation numbers in the compound or ion.
Sum
Composed of metal cations and non-metal anions, or, polyatomic ions
Ionic Compounds
Names and formulas always start with the ______ cation
positively charged
Ions are combined in ratios so that the final ionic compound is…
neutral
Never use ___ in the names of the ionic compounds
prefixes
The cation name is simply combined with the _____ only
anion name
If the cation is capable of having more than one possible charge, the _____ is included in the name as a Roman numeral in brackets
cation charge
Using Roman numeral to indicate oxidation number
Stock System
In writing the formula of a compound the algebraic sum of the oxidation numbers should be equal to…
zero
Elements or ions with _____ are written first followed by elements or ions with negative oxidation numbers
positive oxidation numbers
Name the metal and change the ending of the nonmetal to -ide
Metal with fixed oxidation state
Has two types of atoms
Binary Compounds
must determine the oxidation state of cation
Metal with varying oxidation state
common name + -ous for ___ oxidation state
lower
common name + -ic for ___ oxidation state
higher
Hydro + -ic +acid
Binary Acids
exceptions to -ide endings
Hydroxides (OH)m Cyanide (CN), Ammonium (NH4+1)
HCL
Hydrochloric Acid
Composed of non-metal atoms only
Simple Covalent (Molecular) Compounds
The more ____ is written first
metallic non-metal
prefixes are used in the name to indicate the number of each ___ present
atom
____ always leads the formula
H
_____ are in the aqueous state
Acids
____ are combined in ratios so that the final acid is neutral
Ions
The acid name depends on the name of the ___ involved
anion
solid substances that also contain water molecules in their crystal structure
Hydrates
The number of water molecules for each formula unit is…
fixed
the formula is written the same as any other compound, but then we add a __ followed by the number of water molecules per ionic formula unit and the symbol H2O
dot
add the word ____ at the end with a Latin prefix to indicate the number of water molecules per ionic formula unit.
hydrate
reacts in a fixed way, has a fixed oxidation state
family
Family with +1 Oxidation state
1A
Family with +2 Oxidation state
2A
Family with +3 Oxidation state
3A
Family with +- 4 Oxidation state
4A
Family with -3 Oxidation state
5A
Family with -2 Oxidation state
6A
Family with -1 Oxidation state
7A
oxidation with (-) means…
to receive
oxidation with (+) means…
to give
what family has different ways of reacting and varied oxidation states
B Family
made up of ONLY 1 ATOM.
Monatomic Cations (+)
made up of MORE THAN 1 ATOMS. (e.g., ammonium cation)
Polyatomic Cations (+)
made up of ONLY 1 NEGATIVELY CHARGED ATOM
Monatomic Anion (-)
made up of MORE THAN 1 NEGATIVELY CHARGED ATOM
Polyatomic Anion (-)
polyatomic na may kasamang oxygen anion
Polyatomic Oxyanion