Naming Compounds

Compounds

• • • Compounds = Chemical combinations of elements Compounds = 2 or more atoms bonded together All the compounds we will work with this year are called binary compounds (2 elements)

NaCl C 2 H 6

Examples

Binary Compound Binary Compound C 6 H 12 O 6 Not a Binary Compound

Naming a Binary Compound Step 1: Type of Bond Ionic Add or remove e Charged ions No molecules

Metal + Nonmetal

?

Covalent Share e Neutral atoms Forms molecules

Nonmetals only

Before you name a compound you must determine the type of bond that holds it together

Naming a Binary Compound Option 1: Ionic Compounds First, name the elements present Then, change the ending of the nonmetal to “-ide”

LiF CaO K 2 S AlBr 3 Ga 2 O 3

Examples

Lithium Fluoride Calcium Oxide Potassium Sulfide Aluminum Bromide Gallium Oxide

Naming a Binary Compound Option 2: Covalent Compounds H 2 O First, name the elements present Hydrogen Oxygen Hydrogen Oxide Then, change the ending of the 2 nd nonmetal to “-ide” One more important step…

Naming a Binary Compound Option 2: Covalent Compounds H 2 O Hydrogen Oxide Mono = 1 Di = 2 Tri = 3 Tetra = 4 Penta = 5 Hexa = 6 Hepta = 7 Octo = 8 Nano = 9 Deca = 10 dihydrogen monoxide Look at the subscripts and add the appropriate prefix to each word

Naming a Binary Compound Option 2: Covalent Compounds C 2 H 4 Carbon Hydride Mono = 1 Di = 2 Tri = 3 Tetra = 4 Penta = 5 Hexa = 6 Hepta = 7 Octo = 8 Nano = 9 Deca = 10 dicarbon tetrahydride Look at the subscripts and add the appropriate prefix to each word

Naming a Binary Compound Option 2: Covalent Compounds CO 2 Carbon Oxide Mono = 1 Di = 2 Tri = 3 Tetra = 4 Penta = 5 Hexa = 6 Hepta = 7 Octo = 8 Nano = 9 Deca = 10 carbon dioxide One last thing, the prefix “mono” is left off of the first element

CH 4 N 2 H 2 C 6 H 6 Si 3 Cl 8 CO

Examples

Carbon tetrahydride Dinitrogen dihydride Hexacarbon hexahydride Trisilicon octochloride Carbon monoxide