Is there a place for 30% peroxide in High School Chemistry?

Is there a place for 30% peroxide in High School Chemistry?

In a recent blog post, the activity Elephant’s Toothpaste was demonstrated. The activity was in keeping with our STAO safety policy regarding chemical use. In that policy, we suggest the use of small quantities of chemicals, at as low a concentration as possible to allow the reaction to proceed. Teachers are also asked to explore … Continue reading

Classification of Lasers Question to the STAO Safety Committee

Classification of Lasers Question to the STAO Safety Committee

Question: The STAO Safe on Science document (2011) indicates that only class 1 and class 2 lasers are recommended for use in high school science classes. Many of the documents that I have examined indicate that Class 3A (old classification), now called Class 3R (new classification) are also safe, unless viewed through an optical device. … Continue reading

Teacher Demo/Student Activity: Iron in Cereal

Teacher Demo/Student Activity: Iron in Cereal

Food labels often contain the word ‘fortified’.  This means that one or more ingredients have been added that are not normally found in that food item.  The purpose is to increase the amount of that mineral or nutrient to serve a dietary purpose.  Table salt is fortified with iodine (to help prevent hypothyroidism, which can … Continue reading

SciNews to Engage Your Students

SciNews to Engage Your Students

Maybe not as many new species; peer support helpful; oxygen here earlier than thought; BPA controversy; new engineered material cools roofs; France calling out to scientists, etc. working on climate control – just a few of the themes in today’s eclectic collection of SciNews.  Share these stories with your students and get them excited about science.