General Chemistry

Game On! IChO is back

Many of you familiar with me will know I have a great affinity for academic competition and was more than a little bit upset when the International Chemistry Olympiad was scheduled for Karachi Pakistan in 2016.

The Search for the Final Element

Have you ever wondered what is the theoretically largest possible value for the atomic number of an element? Using some introductory physics and algebra, you can get your students thinking about this idea.

Finding and Writing the Molar Mass of Elements

This worksheet is intended to be used as a "Guided Instructional Activity" (GIA). It asks students to find the molar mass of selected elements and write the molar mass as two equivalent fractions ("conversion factors") and as an equality. It is designed to help develop good habits in representing molar mass and other conversion factors, and to emphasize the idea that a conversion factor has a numerator and denominator that "name" identical quantities using different measures.


Physics teachers have AAPT, biology teachers have NABT, and starting this fall, chemistry teachers will have AACT. We are happy to announce that the American Association of Chemistry Teachers (AACT) will be accepting charter members starting on Aug. 4 at BCCE in Grand Rapids, Mich. But if you aren’t attending BCCE, you can join AACT by visiting on Aug. 4, and you’ll still have the status of charter member.