Some orange peels can cause balloons to pop. The compound in orange peels called limonene is responsible for this effect. Limonene is responsible for the wonderful smell of oranges, and it is a liquid at room temperature.

In this age of scientific inquiry, molecular modeling, digital classrooms, and differentiation, I felt downright guilty about any teacher-centered time. My classroom is flipped after all. I’m not supposed to be lecturing, right?

A fun experiment to conduct when discussing phase diagrams is the melting of solid carbon dioxide (dry ice).

Last year I came across a link on Twitter regarding an art installation by Roger Hiorns in England titled “Seizure.” Some of you may have seen it too – a condemned flat in London was essentially sealed off and filled with more than 75,000 L of supersaturated copper sulfate solution.

I teach AP chemistry and general chemistry at Hudsonville High School in the Grand Rapids area.  I applied for the HACH grant last spring and was very excited when I was one of the recipients that was accepted.  The process of applying is very easy.

Check out the solution to Chemical Mystery #4: The Case of the Misbehaving Balloon!

Historically, my students report significant figures as one of the most confusing concepts in honors chemistry. My recent blog post described the process of transforming my introduction into an inquiry activity. I’ve also re-worked my practice activities to be more directed to specific student needs, more focused on spending time with small groups, and more dedicated to active learning. This four step tiered plan works for me.