by msander | Feb 26, 2018 | Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Biology, Gr. 11-12 Chemistry
Over 100,000 metric tons of caffeine are consumed around the world every year. That’s equivalent to the weight of 14 Eiffel Towers! Caffeine helps us feel alert, focused, and energetic, even if we haven’t had enough sleep — but it can also raise our blood pressure and...
by msander | Feb 21, 2018 | Gr 9-10 Science, Gr. 11-12 Chemistry
This video shows the detonation of nitrogen triiodide, a shock-sensitive chemical. The chemistry of this reaction is fascinating. However, this demo is not recommended for the typical high school science lab due to the instability of the compound and the extensive...
by msander | Feb 11, 2018 | Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Chemistry, Gr. 11-12 Physics
Jeff Dahn is a pioneer in lithium-ion battery research and one of the world’s leading innovators in battery technology. The work accomplished by the Dahn Lab at Dalhousie University has had an impact on nearly every aspect of lithium-ion battery research. From...
by msander | Feb 8, 2018 | Gr 9-10 Science, Gr. 11-12 Chemistry, Safety
While serious accidents causing catastrophic injury in high school science activities are rare, when they occur their human toll can be devastating. This post examines one potentially dangerous demo, its hazards and suggestions for safer alternatives. The Rainbow...
by msander | Jan 31, 2018 | Gr 9-10 Science, Gr. 11-12 Chemistry
You won’t believe what our science guy Steve Spangler found inside a soda can. In fact, it’s inside every soda can and it protects the aluminum from reacting with the soda. Steve takes us inside his lab for a chemistry lesson you won’t forget Contact Steve Spangler at...
by msander | Jan 29, 2018 | Gr. 11-12 Chemistry
This activity demonstrates the effect of pressure and temperature on three reversible reactions: the solubility of carbon dioxide in water, the reaction of dissolved carbon dioxide and water to form H2CO3, and the weak acid ionization of H2CO3 to give HCO3- and H+...
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