Daily Archives: January 20, 2017



Parts of an Atom
The atom is the basic building block of matter. Atoms combine to form pure elements, compounds, and complex forms like computers and phones. Atoms are the smallest particle of matter than cannot be further subdivided using chemical means. In order to understand how atoms interact with each other, you first need to […]

Learn the Parts of an Atom


A blueprint is a paper-based reproduction of a technical drawing in which the white drawing appears on a blue background. Blueprints are made using the cyanotype process. Franklin M. Jones, U.S. Department of State
A blueprint is a paper-based reproduction of a drawing, usually a technical drawing, such as an architect or engineer would use. Blueprints use the cyanotype process that was invented by the astronomer John Herschel in 1842. The paper (or vellum or plastic) is coated with a solution of two soluble […]

How Blueprints Work



Graphene is a one-atom thick honeycomb sheet composed of carbon atoms that have bonded together. Thomas Szkopek
The discovery of graphene, a honeycomb sheet of carbon, was so important it earned a Nobel Prize, yet graphene isn’t an exotic material. You can make it yourself. Here are three easy methods to try: Graphene From a PencilWhen you draw with a pencil, you are depositing graphite onto paper. […]

Easy Ways Anyone Can Make Graphene


Although Avogadro's Number is named for Avogadro, he did not invent or discover it.
Avogadro’s number (Avogadro’s constant) is the quantity of objects found in 1 mole of a sample. It is an exact number that is defined as 6.02214076×1023 mol−1. This is essentially the number of atoms in 12 grams of carbon-12. However, for most chemistry calculations, you work with atomic masses, which are commonly […]

Why Use 4 Significant Figures for Avogadro’s Number?   Recently updated !