Chemistry Lab

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Chemistry Lab: Classification of Crystalline Solids

SCH 4U
Domenic Colantonio

Teacher: Ms. Chisholm Due Date: Tuesday, November 24th, 2015
Purpose: To design a lab investigation in order to identify several types of crystalline solids To Observer and Analyze the physical properties of several types of crystalline solids To Determine the types of bonding present between the building blocks of several types of crystalline solids

Materials: Non-Polar Molecular Solids Ionic Solids Network Crystals Polar Molecular Solids Metallic Solid Deflagerating Spoon Test Tubes Test Tube Rack Electronic Scale Scoopula Bunsen Burner Conductivity Tester Distilled Water Hexane Plastic dishes Stopwatch Distilled Water Graduated Cylinder Test Tube Plugs

Safety: Ensure Hexane is always used under the fume hood and that it does not come into proximity with any open flames. Dispose of all chemicals/solutions in appropriate garbage/sink.

Procedure: Physical Properties * A) Hardness and Texture/Smell/Conductivity(s)/Melting Point 1. Measure out 1 gram of each substance using an electronic scale 2. Use the scoopula to note on the hardness and texture of the substance 3. Waft over the substance to note odour 4. Using the conductivity tester, test the conductivity of the solid substance and note 5. Prepare a Bunsen burner, away from any flammable substances, with a dark blue flame containing a lighter, inner, blue flame 6. Using a deflagrating spoon, put substance over the tip of the inner flame, and using the stopwatch, note on how long it takes the substance to melt 7. Note: If melting time is over 60 seconds, simply…...

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