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Chad Husting is a self proclaimed science nerd who loves helping kids figure things out. He has been a Lead Contributor for ChemEd X since 2017. With the hope of helping readers get to know him better, we asked him a series of questions. Check out his responses.
Dean Campbell is a veteran instructor that enjoys sharing his passion for chemistry with students, instructors and the public. Get to know Dean and learn about his favorite demonstration!
The major component of a non-carbonated drink such as KoolAid or a similar beverage is usually a fruit acid, either citric acid or malic acid. The titratable acid (H+) concentration of such drinks has been found to be in the range of 0.02 to 0.04 M. A weak acid-strong base titration of these drinks with 0.1 M NaOH solution is feasible as a student exercise. The use of such drinks as reagents is safe, convenient, and inexpensive. Experiment instructions are included.
Nora Walsh shares the outline of the interactive notebook pages she uses for her gases unit. Templates for all of the documents and foldables are available for download.
This engaging activity uses wrapped and unwrapped candy to simulate alpha and beta decay.
Nora Walsh has been using interactive notebooks for some time. Here she outlines her stoichiometry unit and explains how she uses the interactive notebooks with her students.
Many chemistry teachers use models and diagrams to help students describe how matter behaves at the particle level. On April 14, 2022, Doug Ragan explained how he uses colored magnets in his classroom to represent things such as subatomic particles, states of matter, balancing chemical equations, types of bonding, molecular geometry and much more. View a recording of his presentation and access materials he uses.
Michael Jansen runs this engaging "big picture" lab on day 1 of Grade 11 Chemistry, which is the students' first dedicated Chemistry course.
Check out this activity designed for beginning chemistry students to become familiar with phase diagrams and their associated terminology. The activity is suitable for an at-home assignment.
In recent years, the fluorescence properties of pumpkin seeds have been highlighted on social media. When illuminated with a UV lamp, pumpkin seed extract appears orange/red to the human eye due to fluorescence associated with protochlorophyllide that is present in the seeds. Chlorophyll extracts can also be used as a fluorescent dye in “glowstick” chemiluminescence experiments. The similarities between chlorophylls and protochlorophyllide raised the question, is it possible to use pumpkin seed extract as a fluorescent dye in chemiluminescence experiments? In this short article, some results are reported from attempts to use pumpkin seed extracts for chemiluminescence experiments.