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922 Heating Curve Lab.pdf - Name Lab Partner Period Date...

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Name: ________________________________ Period: _________ Lab Partner: ___________________________ Date: _________ Experiment: Heating Curve for Water Objective: To construct and interpret a heating curve for water. Materials: 250 ml beaker 200 ml deionized water Ice Hot plate with stirring capability Teflon stir bar Glass stir rod Thermometer Ring stand with utility clamp Stop watch Safety goggles Pre-Lab: 1) Read through and annotate the procedures. In two to three sentences summarize the lab. 2) What does thermal equilibrium mean? 3) What is the independent variable? 4) What is the dependent variable? 5) Set up a data table in the data section of this lab. Procedure: 1) Place 150 ml deionized water into the 250 ml beaker. 2) Add enough ice to form a slush. If ice cubes are used, add sufficient ice to increase the volume by about 50 ml. 3) Allow the ice-water mixture to come to thermal equilibrium which should take about 5 minutes. Occasional stirring with a glass stir rod will accelerate the equilibrium. While this is occurring, turn on the hot plate to 5.
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