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120 Chemistry I (ACP) 521
130 Unit 10 Colligative Properties
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300 In what ways are colligative properties used in everyday life?
400 Dissociation of ionic compounds in solution
400 Freezing point depressions and boiling boint elevation
400 Making ice cream
500 Write dissociation equations of any soluble ionic solid
500 Calculate the total number of moles of ions produced by dissociation
500 Use fp depression and bp elevation constants to determine the new freezing point or boiling point of a solution
500 Determine which solution would have the biggest effect on the melting point or boiling point of an aqueous solution
500 Calcuate the mass of salt which needed to dissolve to produce the freezing point acquired in the ice cream lab
600 Read about colligative properties and their use in everyday life
600 Practice writing dissocation equations and calculating the number of moles of ions produced
600 Make ice cream in the lab and use a temperature probe and CBL to obtain data of the temperature changes in the ice-salt mixture
600 Download data to a computer and prepare a graph of the temperature vs. time during the making of the ice cream
600 Draw the best fit curve on the graph
600 Use the freezing point depression obtained from the graph the determine the mass of salt which dissolved to cause this temperature change
700 Performance based grading of ability to collect data using a CBL and to down-load the data to a computer and prepare a graph
700 Calculations using fp and bp depressions constants for water
700 Lab report
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700 Assessment is based on a total point system.  Lab reports range between 50 and 100 points.  Quizzes range between 10 and 25 points.  Tests range between 100 and 200 points.  Homework ranges between 5 and 15 points.  Performance based grading ranges between 5 and 20 points.
820 Lab written by S. Pratt
820 Directions for downloading data from the CBL developed by V. May and S. Pratt