With more than 30 safety violations shown, the cartoon serves as a great ice breaker as I have each student introduce themselves and then list a safety infraction being shown on the cartoon.
CLEAPSS is a subscription service, but our YouTube Channnel is an open source. The videos are designed for teachers and technicians in schools. They may just give you ideas. I have just put one up about electrostatics and the effect of magnets on water and oxygen. In a couple of weeks I hope to have a sequel showing the effect of magnets on precipitates and complexes.
I recently spoke by email with Bob Worley as he prepared an article, But Surely That’s Banned, sharing some thoughts on chemical safety for teachers from his UK perspective. Part of the discussion revolved around our shared concern for using methanol for demonstrations. The Fire Tornado demonstration, that was part of the September 2014 Nevada museum incident, can easily be found in written form and video in a quick Google search.
The Royal Society of Chemistry became increasingly frustrated in 2004 when academics (the “when I was a lad” variety”), National Tabloids (it’s “‘elf un safety gone mad” variety), and many teachers were quoting health & safety fears as the reasons not to do practical science work and demonstrations.
Statement from the ACS Committee on Chemical Safety regarding the “Tornado Experiment” Explosion in a Science Museum in Reno, Nevada
Chemistry classroom accidents have been in the news too often recently. I hazard to suggest that there are smaller incidents that never make the news because there are luckily no serious injuries. We need to be vigilant in our safety concerns to protect our students and ourselves from any accidents and exposure to hazardous substances. We also need to be aware of theft concerns. Unfortunately, students may be looking for ingredients to experiment with explosives or to manufacture illicit drugs.
I was at a chemistry teacher workshop recently and we participated in a common Hess’s Law laboratory. Part of the procedure required us to measure about 2 grams of solid NaOH and add it to 100 mL of 0.5 M HCl. We also added 50 mL of 1 M NaOH solution to 50 mL of 0.5 M HCl solution. We then compared the energy change of both containers.
Robert H. Hill, Jr., Ph.D., Chair, ACS Committee on Chemical Safety asked us to post the following alert about the Rainbow Demonstration. I hope chemistry teachers will share the alert with their networks.
It has happened again. We just published a “Lab Accidents” blog with a link to the US Chemical Safety Board’s video entitled “After the Rainbow” published December 10, 2013. Less than a month later, a young boy has experienced the same nightmare scenario as the one described in the video.