A Chemist Celebrates the International Year of Light
Happy New Year! Did you know that 2015 is the International Year of Light (IYL)? IYL is a “global initiative adopted by the United Nations to raise awareness of how optical technologies promote sustainable development and provide solutions to worldwide challenges in energy, education, agriculture, communications and health1”. IYL is sponsored by several organizations with interests in science and science education, including the European Physical Society, the Institute of Physics, the American Physical Society, and the American Institute of Physics. You can find several lesson plans, videos and other educational resources on the IYL website2.
Observing a Chemical Reaction (NGSS Modified)
This is a Chemical Reactions lab that I modified to meet NGSS guidelines.
Using Google Hangouts, an iPad and AirServer for an Online Review Session
"Mr. T, you should do a review session for us before our final exam using a Google Hangout."
A Simple, yet Dramatic Chemistry Experiment with Ping Pong Balls
Cellulose nitrate (also known as nitrocellulose or guncotton) is a very flammable substance that is formed by reacting cellulose (also known as dietary fiber) with a mixture of concentrated nitric and sulfuric acids:
Mass of a Reaction Product
Students combine sodium carbonate and hydrochloric acid generating carbon dioxide gas which is allowed to escape. They measure the actual yield of carbon dioxide produced (missing mass), calculate the theoretical yield using stoichiometry, and then the percent yield. Students understand that 100% yield is the most appropriate answer (based on the Law of Conservation of Mass), so after considering the meaning of significant figures and the uncertainty of their measurements they are asked to decide if they did (or did not) get an answer that might indicate the validity of the Law.
Scientific Practices Post #2: Conclusions from Evidence
In this post I would like us to consider the ways teachers can help support and scaffold the process of making claims and drawing conclusions on the basis of evidence. Not only is this grounded in the scientific practices addressed in the Next Generation Science Standard
Simple Activities to Integrate Particle-Level Diagrams
There have been many conversations within the Chemistry Education community surrounding the revisions to the AP curriculum. Twitter has been buzzing with instructors debating how to implement the changes, conferences and workshops have participants deconstructing the data from last year’s exam, and classroom teachers are working diligently to prepare their students for this year’s test. One way the College Board has tried to shift the AP curriculum away from algorithmic problem solving and toward more meaningful conceptual understanding is through the use of particle diagrams.
Join us in professionalizing the career
Hi everyone, I’ve spent much of my time over the past 10 years since moving from high school to college chemistry teaching thinking about whether I made the right choice in doing so.






