classifying compounds

Compounds

Substances formed from two or more elements.

Binary Compounds

Compounds consisting of two different elements.

Ternary Compounds

Compounds consisting of three different elements.

Covalent Molecular Compounds

Compounds formed by the joining of two nonmetals through covalent bonds.

Covalent Bonds

Bonds formed by the sharing of electrons between atoms.

Ionic Compounds

Compounds formed by the joining of a nonmetal and a metal through ionic bonds.

Ionic Bonds

Bonds formed by the transferring of electrons between atoms.

Diatomic Molecules

Molecules consisting of two atoms.

Homonuclear

Diatomic molecules made of two of the same atoms.

Heteronuclear

Diatomic molecules made of two different atoms.

Polyatomic Molecules

Molecules containing more than two atoms.

Molecular Formula

A representation showing the exact number of atoms of each element in a molecule.

Subscript

A number in a chemical formula indicating the number of atoms of an element.

Prefixes

Terms used in naming covalent compounds to indicate the number of atoms.

Naming Covalent Compounds

The process of naming compounds using prefixes and the “ide” suffix for the second element.

steps in naming compounds

1. Write the name of the two elements in the order they're listed in the formula

2.  use prefixes to represent the amount of each atom

   1.  if just one atom of the first element is present, do not use mono

   2.  vowels at the end of the prefix are sometimes dropped when the atoms start with a vowel

3.  and the name of the second element with “ide.”

1

mono

2

di

3

tri

4

tetre

5

penta

6

hexa

7

hepta

8

octa

9

nona

10

tena