Chemical Formulas and Chemical Compounds Flashcards
monatomic ion
ion formed from a single atom
formation of monatomic ions
gaining or losing electrons
binary compound
compound composed of 2 elements
nomenclature
naming system
nomenclature of binary ionic compounds
involves combining the names of the compound’s positive and negative ions
name of cation placed before name of anion
stock system
system of using a Roman numeral after name of d-block cations to indicate the oxidation number
used with elements which form 2 or more cations with different charges
oxyanion
polyatomic ion that contains oxygen
nomenclature of oxyanions
most common ion’s suffix becomes “-ate”
ion with 1 less oxygen than most common ion’s suffix becomes “-ite”
ion with 2 less oxygen than most common ion’s prefix becomes “hypo-“
ion with 1 more oxygen than most common ion’s suffix becomes “per-“
prefix for 1
mono-
prefix for 2
di-
prefix for 3
tri-
prefix for 4
tetra-
prefix for 5
penta-
prefix for 6
hexa-
prefix for 7
hepta-
prefix for 8
octa-
prefix for 9
nona-
prefix for 10
deca-
acid
distinct type of molecular compound
usually refers to a solution in water of a compound rather than the compound itself
classifications of acids
binary acids
oxyacids
binary acid
acid that consist of 2 elements (usually hydrogen and a halogen)
oxyacid
acid that contains hydrogen, oxygen, and a third element (usually a nonmetal)
salt
ionic compound composed of a cation and anion from an acid
oxidation number
oxidation state
positive or negative whole number assigned to an element in a molecule or ion
assigned to atoms composing a compound or ion in order to indicate the general distribution of electrons among bonded atoms
percentage composition
percentage by mass of each element in a compound
percentage composition formula

empirical formula
chemical formula consisting of the symbols for the elements combined in a compound with subscripts showing the smallest whole-number ratio of the different atoms in the compound
steps to find empirical formula
find percentage composition
convert percentage composition to mass
convert mass to moles
use mole values as subscripts
factor subscripts to whole numbers
molecular formula formula
chemical formula of a molecular compound that shows the kinds and numbers of atoms present in a molecule of a compound

hydrate
compound with a specific number of water molecules bound to its atoms
anhydrous compound
compound without water (or from which water has been removed)
oxidation number of aluminum
3+
oxidation number of zinc
2+
oxidation number of silver
1+
oxidation number of magnesium
2+
oxidation number of elements in group 1
1+
oxidation number of elements in group 2
2+
oxidation number of elements in group 13
3+
oxidation number of elements in group 14
+4
oxidation number of elements in group 15
3-
oxidation number of elements in group 16
-2
oxidation number of elements in group 17
-1
formula of ammonia
NH3
formula of sulfuric acid
H2SO4
formula of nitric acid
HNO3
formula of phosphoric acid
H3PO4