This fun activity emphasizes experimental observation and scientific reasoning skills. The primary purpose of this Lab-Aid is not to identify the common kitchen chemicals, but to observe how they react. Students first explore some physical and chemical properties of several common kitchen substances (four powders). Then, they determine some properties of the powders by using three liquid indicators. After determining the physical and chemical properties, students attempt to identify some of the mystery powders provided using the results from their experimental observation. The solutions and powders necessary to complete the activities are included in this kit. This kit is complete for 50 students.
Scientific Concepts:
Emphasize experimental design and observation
Develop scientific reasoning skills
Content List:
1Teacher's Guide with MSDS
50Student Worksheets and Guides
12Chemplates‚® w/spatula
2Droppers
1Bottle of Powder I
1Bottle of Powder II
1Bottle of Powder III
1Bottle of Powder IV
2Bottles of Indicator B
1Vial ofUnknown 1
1Vial ofUnknown 2
1Vial ofUnknown 3
1Vial ofUnknown 4
2Drop control bottles of Indicator A
2Drop control bottles of Indicator C
Classroom Planning:
To complete this kit requires one ~50-minute class periods