Honors Chemistry Unit 6 Molecular Formulas

Molecular compounds are held together by…

covalent bonds

How do you name binary molecular compounds?

• add the appropriate prefix based on the subscript of each nonmetal

• if the first element has a subscript of 1, don’t include the prefix

• the second nonmetal ends in an -ide

Prefix 1

mono-

Prefix 2

di-

Prefix 3

tri-

Prefix 4

tetra-

Prefix 5

penta-

Prefix 6

hex-

Prefix 7

hept-

Prefix 8

oct-

Prefix 9

non-

Prefix 10

dec-

How do you name a hydrate?

• follow normal naming rules and add a hydrate to the end

• the hydrate will have a prefix depending on how many water molecules are attached