Sunscreens: Preparation and Evaluation - Student Laboratory Kit
By: The Flinn Staff
Item #: AP7433
In the Preparation and Evaluation of Sunscreen Consumer Chemistry Laboratory Kit, students create their own sunscreen. Then, a spectrophotometer is used to determine the absorbance of ultraviolet light by their sunscreen.
Sunburn! We have all experienced the pain and misery of overexposure to the Sun’s intense “heat.” Sunscreens applied to the skin shield us from the damaging ultraviolet rays. What do sunscreens contain and how do they block this harmful radiation? Students create their own sunscreen from one of eight prescribed formulations of lotions and sunscreen chemicals. Once the sunscreens are made, students use a spectrophotometer to determine the absorbance of ultraviolet light by their sunscreen. The results are compared to determine the most effective sunscreen. Includes reproducible student handouts, detailed background information, complete Teacher Notes with sample data, and all chemicals and consumable supplies needed to perform the lab.
Complete for 30 students working in pairs. A spectrophotometer is required and available separately.