FreezingandBoilingPointChanges

FreezingandBoilingPointChanges - Freezing Point and Boiling...

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Unformatted text preview: Freezing Point and Boiling Point Changes for Solutions and Solids Lesson Plans and Labs By Ranald Bleakley Physics and Chemistry teacher Weedsport Jnr/Snr High School RET 2 Cornell Center for Materials Research Summer 2005 Freezing Point and Boiling Point Changes for Solutions and Solids Lesson Plans and Labs Summary: Major skills taught: • Predicting changes in freezing and boiling points of water, given type and quantity of solute added. • Solving word problems for changes to boiling points and freezing points of solutions based upon data supplied. • Application of theory to real samples in lab to collect and analyze data. Students will describe the importance to industry of the depression of melting points in solids such as metals and glasses. • Students will describe and discuss the evolution of glass making through the ages and its influence on social evolution. Appropriate grade and level: The following lesson plans and labs are intended for instruction of juniors or seniors enrolled in introductory chemistry and/or physics classes. It is most appropriately taught to students who have a basic understanding of the properties of matter and of solutions. Mathematical calculations are intentionally kept to a minimum in this unit and focus is placed on concepts. The overall intent of the unit is to clarify the relationship between changes to the composition of a mixture and the subsequent changes in the eutectic properties of that mixture. Theme: The lesson plans and labs contained in this unit seek to teach and illustrate the concepts associated with the eutectic of both liquid solutions, and glasses The following people have been of great assistance: Professor Louis Hand Professor of Physics. 323 Clark Hall Cornell University Ithaca, New York 14853 Phone: (607) 255-6023 Email: [email protected] ... www.physics.cornell.edu/profpages/Hand.html - Aug 2, 2005 David P Wise Staff. Chemistry and Chemical Biology. Clark Hall, Cornell University, Ithaca, New York 14853 ph.(607)255-3674 E-mail [email protected] Ronald C Kemp staff Cornell Center for Materials Research Clark Hall, Cornell University, Ithaca, New York 14853 ph(607)255-2367 E-mail: [email protected] John P. Sinnott Staff Cornell Center for Materials Research Clark Hall, Cornell University, Ithaca, New York 14853 ph (607)255-3371 E-mail: [email protected] Internet Resources: The following web sites have provided excellent information. 1. Melting temperatures and ranges http://www.lib.umich.edu/dentlib/Dental_tables/Melttemps.html 2. http://users.ticnet.com/mikefirth/techspec.htm 3. www.kimble-kontes.com/pdfs/physical_properties_glass.pdf 4. For information about warm glass techniques such as fusing, and kiln forming, visit the Warm Glass website at http://www.warmglass.com Some preliminary notes for Teachers: 1. The following lesson plans and labs are intended to be taught in class periods of forty-five minutes....
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This note was uploaded on 12/09/2011 for the course SP 108 taught by Professor Whittenburg during the Summer '11 term at Montgomery College.

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FreezingandBoilingPointChanges - Freezing Point and Boiling...

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