Take a "conservative" approach to planning your next unit on mass and matter! What better way to answer "But where did the gas go?" than with a lab designed to promote good report writing, research skills, and detailed observation....

Atoms, elements, and molecules, oh my! Teaching the fundamentals of chemistry to curious sixth graders has never been easier to accomplish. Here is a resource that pulls together everything needed to get them off to a good start,...

Whoa! What just happened? That's right, change is everywhere. But what exactly is changing? Middle school science sleuths get to the bottom of the changes matter can experience. Through simple demonstrations, engaging videos, and an...

A video and a short quiz on the parts of an atom, the periodic table, and molecules.

After watching this simulation, students will be able to describe characteristics of the three states of matter. They will watch as atoms and molecules change between solid, liquid and gas phases.

Discover atoms and molecules which make up matter, motion of atoms and how to measure the mass, volume and density of matter.

[Free Registration/Login may be required to access all resource tools.] Discusses elements, atoms, compounds, molecules, and crystals. Looks at mixture and different types of them.

[Free Registration/Login may be required to access all resource tools.] Examine the composition of matter.

[Free Registration/Login may be required to access all resource tools.] Examine the composition of matter.

[Free Registration/Login may be required to access all resource tools.] Examine the composition of matter.

When two or more atoms combine they give rise to a molecule. A molecule can be made up of many atoms of the same element. There are 112 elements known to man, so can you imagine the different permutations and combinations of molecules...

Atoms and molecules come together to create matter. What happens to the weight of matter when it is frozen? Can matter be destroyed? Check out these activities to clearly understand how this works.

Josh Kurz breaks macaroni salad down to its smallest chemical components. [3:14]

This unit covers introductory concepts of mixtures and solutions. Students think about how mixtures and solutions, and atoms and molecules can influence new technologies developed by engineers. The first lesson explores the fundamentals...

An introduction to the College Board's AP Chemistry course, which is designed to be equivalent to a first year college chemistry course.

Matter is anything that has mass and occupies a space. In this site you will find a lot of illustrations and interactive activities dealing with matter.