The Three Property of Matter

Angela Scott WM. T Sherman Elementary School
1000 W. 52nd Street
Chicago IL 60609
(312) 535-1757

Team Members: Sandra Broomes & Shelia McKinnon

Objectives:
Students in grades 7 & 8 will be able to demonstrate the effect of salt on ice Students will be able to measure the temperature of ice Students will be able to measure the temperature of ice and salt Students will prepare a graph using the temperatures recorded on their data table Materials needed: For each group: Crushed ice 5 identical containers (2 oz. cups) 5 thermometers that record -20o 5 labels 5 spoons to stir ice 20 grams salt 1 ml measuring scoop Strategy Label each cup with a number 1-5 Place crushed ice in each cup to the same level Stir all the cups Record the temperatures of all the cups Add 1 ml of salt to cup #1 Add 2 ml of salt to cup #2 Add 3 ml of salt to cup #3 Add 4 ml of salt to cup #4 Do not add anything to cup #5 Stir all cups again, put thermometers in each cup, and take temperatures immediately. Record temperatures for the next 12 minutes on a data table. Produce a graph of the temperature over time for each cup. Use various symbols for the different cups (Dotted line for cup #1, dashed line for cup #2, x's for cup #3, o's for cup #4, and a line for cup #5) or use different colors of pen (pencil). DATA TABLE (Temperatures) cups _________________________________________ 0 | | | | | | M _________________________________________ i 1 | | | | | | n _________________________________________ u 2 | | | | | | t _________________________________________ e 3 | | | | | | s _________________________________________ 4 | | | | | | _________________________________________ 5 | | | | | | _________________________________________ 6 | | | | | | _________________________________________ 7 | | | | | | _________________________________________ 8 | | | | | | _________________________________________ 9 | | | | | | _________________________________________ 10 | | | | | | _________________________________________ 11 | | | | | | _________________________________________ 12 | | | | | | _________________________________________ Performance Assessment: Objectives: Ability to read a thermometer Ability to draw a graph beginning at the middle rather than 0,0 Ability to conclude that a chemical reaction has taken place Written Objective: Full sentence answers The ice became colder as a result of adding salt Rubric: 0- No attempt made 1- Incomplete answers 2- Complete answer with little information 3- Complete answer with all information
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