Chemical Formulas & Compounds Chapter 7
Chemical Names & Formulas
Section 7.1
Al (SO )
Subscript refers to the # atoms
Subscripts refers to # O
Subscript refers to everything inside the parenthesis
Monatomic Ions
- ions formed from a single atomp.203 in textbook
All the negative ions are called "ide."
Binary Ionic Compounds
- compounds composed of 2 different elementsList the positive ion first
Negative ion second
Charges "cross over" to form subscripts
Nomenclature
- methods of naming chemical compounds- Positive ions with 2 different charges - use roman #
Polyatomic Ions
- ions containing 2 or more atoms covalently bonded to form an ion which can react with other atoms forming an ionic bond.p.208 table 7-4
"ate" larger # of O atoms
"ite" smaller # of O atoms
Naming acids: p.211 table 7-7
Molecular Compounds (covalent)
Old way p.210 table 7-5
List the least electronegative element first
Use prefixes to denote the number of atoms of each type
