Flame Day in AP Chem
by George Flatau, HS chemistry teacher, science department chair
This video shows something we've been doing in Advanced Placement Chemistry class recently. Not everything we do is fun to watch, but this is.
This video shows something we've been doing in Advanced Placement Chemistry class recently. Not everything we do is fun to watch, but this is.
Wax is heated to boiling, which is past its flash point, the point at which it can combust without an ignition source. Trapped in the test tube, the wax lacks sufficient access to oxygen, so the test tube is plunged into cold water, shattering it. The water boils on contact with the hot tube and wax, vaporizing some of the water into steam. The steam ejects the wax out of the tube, where it has far greater surface area and access to oxygen. With high energy and access to oxygen, it bursts into flames. It's part of a demonstration of the power of surface area to affect rates of reaction.
Lycopodium powder is dried clubmoss spores. They have very high surface area (the powder is very fine) and relatively high fat content, making them highly flammable when the powder is spread into the air. If the powder is collected in one spot (such as in the bottle), it has low surface area, making it far less flammable and thus far safer.
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Lycopodium powder is dried clubmoss spores. They have very high surface area (the powder is very fine) and relatively high fat content, making them highly flammable when the powder is spread into the air. If the powder is collected in one spot (such as in the bottle), it has low surface area, making it far less flammable and thus far safer.
School News
List of 3 news stories.
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Learn new skillset through USN Evening Classes
USN Evening Classes, our one-night classes that benefit our need-based scholarship endowment, were recently featured on the City Cast Nashville podcast. Visit usneveningclasses.org to view the fall catalog.Read More -
USN Evening Classes offers mahjong for parents, Middle Schoolers
Students in grades 5-8 and their families can take USN Evening Class 702: Mah and Pah Jong and Me to learn to play a board game together while benefiting USN's need-based scholarship endowment.Read More -
Travel grant takes naturalist to Galápagos Islands
Read MoreThe Helen Meador Summer International Fellowship funded a summer of professional development in South America for Lower School Naturalist Carrie Riley. Through this profound experience, she said she plans to bring these lessons into her teaching, grounding her voice in wonder, joy, and a commitment to protecting the natural world, which she loves.
Athletics News
List of 3 news stories.
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HS athletics recaps for September 11-17
Tiger golfers have officially qualified for the region tournament, and our other teams are not far behind. Volleyball sits near the top of the district, finishing up regular season play next week with Senior Night. Girls soccer continues to hold first place in the district after another 9-0 win, and our cross country runners are chasing after some school records. To round it all out, our mountain bike team traveled to Oakfield to continue to improve on their times for the season. There’s plenty more where that came from- so be sure to come out to the River Campus, Sperling Gym, or out on the road to cheer on our Tigers before their seasons end.Read More -
MS athletics recaps for September 11-17
Middle School volleyball and tennis teams are nearing the final games of their seasons, with the competition heating up while the Tigers play to determine their HVAC rankings. Cross country was finally able to race at the River Campus despite the heat, and our mountain biking team traveled to Oakfield, Tennessee, for a high-temperature race weekend.Read More -
MTB Race #2 Report - Rockabilly Ridge Trails, Oakfield, TN
The MTB team returned to the the twisty trails of tranquil Oakfield, TN on Sept 13th to take part in the second race of the season, as part of the 5-race series hosted by the NICA/TICL League.Read More
Contact
Edgehill Campus
2000 Edgehill Ave.
Nashville, TN 37212
Phone: 615-321-8000
Fax: 615-321-0889
Email: info@usn.org
River Campus
1200 County Hospital Road
Nashville, TN 37218
2000 Edgehill Ave.
Nashville, TN 37212
Phone: 615-321-8000
Fax: 615-321-0889
Email: info@usn.org
River Campus
1200 County Hospital Road
Nashville, TN 37218
USN Mission:
University School of Nashville models the best educational practices. In an environment that represents the cultural and ethnic composition of Metropolitan Nashville, USN fosters each student’s intellectual, artistic, and athletic potential, valuing and inspiring integrity, creative expression, a love of learning, and the pursuit of excellence.
University School of Nashville models the best educational practices. In an environment that represents the cultural and ethnic composition of Metropolitan Nashville, USN fosters each student’s intellectual, artistic, and athletic potential, valuing and inspiring integrity, creative expression, a love of learning, and the pursuit of excellence.