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Observe both an exothermic and an endothermic reaction/process as I use a modified propane torch in the video demonstration.
In an effort to implement the science and engineering practices of the NGSS, I have tried to introduce argumentation as a practice into my chemistry courses. I share some growing pains and what I have learned through the process in this blog post.
The solution to Chemical Mystery #13: Bye Bye Blue! is presented. This experiment is useful to demonstrate to students when discussing acid-base indicators, neutralization reactions, or the acidity of carbon dioxide when it dissolves in water.
A simple, but tricky experiment is displayed. Can you figure out how the trick was done?
Several teachers I know have had circumstances present themselves in which they may not always be able to provide lab experiences in a traditional lab setting. They still want to provide students with rigorous problem solving situations that require students to use the scientific method. Could rigorous take home labs possibly be the answer?
You are likely aware that diamonds are converted - albeit slowly - to graphite under normal conditions. Thus, diamonds don't last forever, in contrast to the popular advertising slogan. However, did you know that you can use chemistry to prove that diamonds are not forever? It's simpler than you think...
I added an extra step including a follow up Claim, Evidence & Reasoning activity to the familiar whoosh bottle activity.
This five puzzle mystery aligns with my chemistry curriculum after instruction on the properties of elements and electron configurations. I use this mystery as a review to prepare for assessments over the properties of elements, symbols on the periodic table and the difference between groups and periods. Also incorporated within the puzzles are basic trends such as the number of subatomic particles, mass number, melting point, and other characteristics of specific elements.
Looking for funds to attend professional development? I used an ACS Hach Grant to fund my travel to a conference last summer (2018).
I teach in a school that was originally designed to be an “open air” school. The school was built with support walls all on the outside of the building. The building, built in the 1970’s, was built with “classrooms without walls”.