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The Chemical Educator

ISSN: 1430-4171 (electronic version)

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Abstract Volume 6 Issue 6 (2001) pp 319-320

An Alternative Demonstration of Chemical Waves: A Video Clip of a One-Dimensional Wave in the Iodate–Arsenite System

Metodija Najdoski, Radmila Aleksovska and Vladimir M. Petruševski*

Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Sts. Cyril and Methodius University, Arhimedova 5, 1000 Skopje, Republic of Macedonia
Received June 19, 2001. Accepted October 15, 2001

Published online: 16 November 2001

Abstract. A chemical wave was initiated in a system (glass tube or graduated cylinder) containing a water solution of potassium iodate, potassium hydrogen sulfate, starch, and an excess of potassium arsenite. A large number of photos (329) were taken with a digital camera (one snapshot every 30 seconds). These photos were linked to give a unique video clip. This video clip may be used as a time-saving alternative to the classical demonstration. Similar clips may be made for other long-lasting processes.

Key Words:  In the Classroom; general chemistry

(*) Corresponding author. (E-mail: vladop@iunona.pmf.ukim.edu.mk)

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Issue date: December 7,2001

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