Explore how Newton's three laws apply to the world of atoms and molecules. Start with the originally contradictory observation of Brownian motion. Then, each law is addressed at the atomic level.

In this activity, young scholars will play the roles of various atoms and molecules to help them better understand how ozone is formed in the earth's stratosphere.

Learn about "hydrocarbons", chemical compounds whose molecules are made up entirely of carbon and hydrogen atoms.

This Study Card stack enables students to review the concepts of matter, the kinds and classes of mater including atoms, molecules, elements, compounds, pure substance, and mixtures.

[Free Registration/Login Required] Explore the composition of air and learn about the different atoms and molecules that we breathe every day.

Learn interesting facts about nitrogen oxides, gases whose molecules are made of nitrogen and oxygen atoms and contribute to air pollution.

Mass spectrometers are machines that give scientists a look at the composition and origin of a material by analyzing and quantifying its atoms and molecules. This tutorial shows how a dual sector mass spectrometer works. (Java tutorial)

Mass spectrometers are machines that give scientists a look at the composition and origin of a material by analyzing and quantifying its atoms and molecules. This tutorial shows how a single sector mass spectrometer works. (Java tutorial)

An easy to do activity that investigates the basic principles behind chemical bonding. The activity is written in lesson plan format that meets NSES standards.

This diagram shows the chemical structure of methane. A methane molecule contains one carbon atom and four hydrogen atoms.