In this demo, a polyethylene strip is charged by rubbing with wool. The charged strip is then used to make paper circles stand on their edges inside a Petri dish. This demo introduces students to the charging of materials by induction as opposed to charging by contact.
Categories: Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Chemistry, Gr. 11-12 Physics
[embed]https://www.youtube.com/watch?v=vqDbMEdLiCs[/embed] This video deals with common misconceptions about temperature and thermal conductivity. Made for ABC TV Catalyst... read more
Categories: Gr 9-10 Science, Gr. 11-12 Chemistry, Safety
Borax Advisory Update Health Canada Health Canada issued an advisory this past summer, suggesting that exposure to boron substances be reduced as much as possible from all sources. They identified... read more
Categories: Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Chemistry
https://youtu.be/k4gKYyXgX5g Fish living in the oceans around Antarctica seem like they should freeze to death. But notothenioids have it all figured out, thanks to the antifreeze proteins in their... read more
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