Experiment - Iodine writing and fingerprints

Students using cotton tips to ‘write’ with an iodine solution on filter paper. With another cotton tip they ‘erase’ the writing with ascorbic acid. In another activity, they visualise their fingerprint on a piece of paper stored in a closed glass jar with solid iodine.

This activity was modified from an activity used by the National Indigenous Science Education Program (NISEP). The NISEP team, led by Associate Professor Joanne Jamie (Macquarie University) were awarded the Department of Industry, Innovation and Science Eureka Prize for STEM Inclusion in 2019

A group of undergraduate students in the School of Life and Environmental Sciences, Deakin University, have also prepared some amazing videos on how to conduct these experiments. A big thank you to our students Jayde Kayla Farrugia, Hamish Glenn McManus, Hanan Katrib, Eliza Jane Leskie and Alexandra Tsapi.