Performance AssessmentIn this lab experience, students identify a group of unknown solids based on the systematic testing of their physical and chemical properties. Students come to understand that a material’s properties are linked to the material’s structure and bonding.
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Safety:
Remind students that hexane is a flammable organic solvent and a dangerous fire risk. This compound should be kept away from flames, heat, and other sources of ignition. Students should cap the solvent bottles and work with hexane in a fume hood or designated work area. Graphite powder is a fire and inhalation risk. Students should avoid contact of all chemicals with eyes and skin. Students should wear chemical splash goggles, chemical-resistant gloves, and a chemical-resistant apron. Students should wash hands thoroughly with soap and water before leaving the lab. Remind students that laboratory safety guidelines should be followed at all times.
Materials Included in Kit
Consumable:
Adipic acid, 20 g
Aluminum granules, 20 g
Calcium carbonate, powder, 25 g
Dodecyl alcohol, 20 g
Glycine, 20 g
Graphite, 20 g
Iron oxide, 20 g
Iron powder, 20 g
Potassium nitrate, KNO3, 20 g
Salicylic acid, 20 g
Silicon lumps, 20 g
Sodium carbonate, anhydrous, 20 g
Copper(II) sulfate, pentahydrate, 25g
Dextrose monohydrate, 20 g
Ethyl alcohol, 250 mL
Hexane, 250 mL
Hydrochloric acid solution, 0.1 M, 250 mL
Paraffin wax, 20 g
Sodium hydroxide solution, 0.1 M, 250 mL
Zinc, 20 g
Aluminum dish, 12
Non-Consumable:
Test tubes, 60
Additional Materials Required
Flinn Scientific Electronic Balance, 410 x 0.01-g, 10
Butane Safety Lighter, 10
Cylinder, Borosilicate Glass, 50 mL, 10
Ring Support, with Rod Clamp, 4", 10
Stirring Rods, Glass, 10
Support Stand, 6" x 9", 10
Flinn Digital Thermometer, 10
Tongs, 10
Test tube rack, 10
Test tube holder, 10
1-800-452-1261
