This post describes a simple way to generate blue, green, orange, and yellow copper complexes, and to use these complexes to introduce students to the effect of temperature on chemical equilibria. The protcol avoids the use of caustic agents, allowing the experiments to be conducted by students as a laboratory-based investigation.
What is the pressure inside a bottle of soda pop? Read this short article to find the surprising answer to this question, and also to learn how to do an experiment to answer this question for yourself!
Free AP Chemistry prep exams are available for teachers. This is part of a research study occurring through the 2020-2021 year. Enroll today!
The Ruben's Tube (also known as a Flame Tube) is a classic experiment used in physics classes. There's also a bit of chemistry to be learned while experimenting with a Ruben's Tube...
Solutions of copper (II) dissolved in acetone are easy to prepare, and can display orange, yellow, green, and blue color depending upon conditions. Such solutions allow for a variety of demonstrations and experiments that illustrate principles of chemical equilibrium.
Cultivating Chemical Curiosity
The September 2019 issue of the Journal of Chemical Education is now available online to subscribers. Topics featured in this issue include: exploring the chemistry of natural materials; research in chemical education; undergraduate research and project-based laboratories; innovative organic chemistry teaching; organic laboratory instruction; analytical chemistry investigations and instrumentation; nanochemistry; inorganic chemistry; teaching kinetics; exploring kinetic-molecular theory; from the archives: biodiesel.
Simple chemical tests are described that can indicate the presence of certain metals in coins. A wide variety of chemical concepts are involved. The experiments described are a natural fit for the 2019 National Chemistry Week theme of "Marvelous Metals!"
Chemistry Education: A Bridge to the Future
The August 2019 issue of the Journal of Chemical Education is now available online to subscribers. Topics featured in this issue include: authentic chemistry laboratories; student motivation, sustained interest, and student success; student understanding of fundamental concepts; aids to assessment; computer-based learning; active learning activities; engaging polymer chemistry activities; experimenting with flavor and food; organic chemistry laboratories; spectroscopy laboratories; acid-base chemistry; from the archives: polymer properties.
Did you figure out how the experiment in Chemical Mystery #14 was performed? The solution is presented here!
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...