I need help with billing... 1  Payment - get help with making payments online. 2  Billing - get help with billing questions. 3  Usage - learn how to view usage and unbilled usage.  Plan - get help with price plan.
A molecule is the smallest particle of a substance that exists independently. Molecules of most elements are made up of only one of atom of that element. Oxygen, along with nitrogen, hydrogen, and chlorine are made up of two atoms. Look at the model of oxygen above.The two balls represents the two oxygen molecules. molecule is the smallest particle of a substance that exists independently. Molecules of most elements are made up of only one of atom of that element. Oxygen, along with nitrogen, hydrogen, and chlorine are made up of two atoms. Look at the model of oxygen above.
Here are examples of common molecules : Molecules made up of two or more elements are called compounds. Water, calcium oxide, and glucose are molecules that are compounds. All compounds are molecules; not all molecules are compounds. Single atoms of elements are not molecules. A single oxygen, O, is not a molecule.When oxygen bonds to itself (e.g., O 2, O 3) or to another element (e.g., carbon dioxide or CO 2), molecules are formed.Types of Chemical Bonds. List of Diatomic Molecules. By Anne Marie Helmenstine, Ph.D. single oxygen, O, is not a molecule. When oxygen bonds to itself (e.g., O 2, O 3) or to another element (e.g., carbon dioxide or CO 2), molecules are formed. Types of Chemical Bonds. List of Diatomic Molecules. By Anne Marie Helmenstine, Ph.D.