Tech Or Treat Name Tags Recipe

Application: solubility, polar/nonpolar substances, science, art Paper is a polar substance, it absorbs other polar substances such as food coloring. Shaving cream is largely non polar. It will not be readily absorbed into the paper. Materials: • • • • • • •

Cardstock (cut into name-tag sized rectangles) Shaving cream Pie pans Food color Toothpicks for stirring Straight edged scraping tool such as a flat ruler Paper towels

Safety Precautions: Take care not to get shaving cream in eyes. It will sting. Food color will stain clothing and hands. Activity Procedure: 1. Spray generous layer of shaving cream into pie pan. 2. Add a few drops of food coloring to top of shaving cream (you may use different colors). 3. Use toothpick to gently mix color into shaving cream creating “swirls” of color. 4. Gently place front of name tag on top of cream/color mixture. 5. Peel off tag and place face up on a paper towel. 6. Using the straight edge, scrape shaving cream from surface of tag. 7. Sit aside to “dry”. Card will not be very wet. 8. Two or three tags can be done with the same cream/color mixture before it begins to break down. Outcomes: The colors will adhere to the paper, but the cream will not affect it. The result is “swirls” of color like a tie dye. Disposal: Wash shaving cream/food color mixture down sink. Save pie pans and food coloring for future use. References:

Patti Duncan, 2006© 2006 Simmons Summer Workshop. John Colagrande, Patricia Duncan, Margaret Holzer