Tuesday, November 26, 2019

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pizza Computer2Computer 2Freezing and Melting of WaterFreezing and Melting of WaterFreezing temperature, the temperature at which a substance turns from liquid to solid, and melting temperature, the temperature at which a substance turns from a solid to a liquid, are characteristic physical properties. In this experiment, the cooling and warming behavior of a familiar substance, water, will be investigated. By examining graphs of the data, the freezing and melting temperatures of water will be determined and compared.OBJECTIVESIn this experiment, you willCollect temperature data during the freezing and melting of water.Analyze graphs to determine the freezing and melting temperatures of water.Determine the relationship between the freezing and melting temperatures of water.Figure 1MATERIALScomputer400 mL beakerVernier computer interfacewaterLogger Pro10 mL graduated cylinderTemperature Probeicering standsaltutility clampstirring rodtest tubePROCEDUREPart I: Freezing1. Fill a 400 mL beaker 1/3 full with ice, then add 100 mL of water.2. Put 5 mL of water into a test tube and use a utility clamp to fasten the test tube to a ring stand. The test tube should be clamped above the water bath. Place a Temperature Probe into the water inside the test tube.3. Connect the probe to the computer interface. Prepare the computer for data collection by opening the file "02 Freeze Melt Water" from the Chemistry with Vernier folder of Logger Pro.4. When everything is ready, click5. Soon after lowering the test tube, add 5 spoons of salt to the beaker and stir with a stirring rod. Continue to stir the ice-water bath during Part I. Important: Stir enough to dissolve the...English: An empty test tube. Italiano: Semplice pr...

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