A2.2 Investigating Sunscreens

Left click to view high quality video or right click to download (2MB)

This video demonstrates the effectiveness of sunscreens factor 30 and 40 compared to a control of no sunscreen. The clingfilm above the middle beaker is smeared with factor 40 sunscreen and the right hand side beaker is smeared with factor 30 sunscreen. The tonic water detects the UV light by glowing pink/purple.

Right click here and open a new window for a powerpoint slide showing the photographs of the experiment captured from the video.

For further information see Salters Advanced Chemistry, 2000, Activities and Assessment Pack, Second Edition, ISBN 0 435 631217