Question

What is an example of a chemical clock reaction (see description)?

Wikipedia mentions some types, but none of these would work for me because they involve 1. only a color change, or 2. are "oscillating chemical reactions" (which basically move like a tornado). Any help is seriously SERIOUSLY very much appreciated here, and I am very very VERY desperate. My school is kind of counting on me with this, but I need help with this one problem/question before I can move on. Thank you SO MUCH!!!

Answer 1

The iodine clock reaction is an excellent choice for demonstration of a clock reaction.

Explanation:

The iodine clock is an excellent demonstration. I have used it many times in Science Fairs and Magic shows

For the demonstration, you just mix two colourless solutions and note the time on a timer.

Then you give a patter speech to your audience and at the appropriate time
(say, 25 s) you point your finger at the beaker and give the order, "OK, change colour."

The colourless solution immediately turns blue-black. You have convinced the audience that you control the reaction with your voice.

Procedure

You can get the list of chemicals and the procedure from several websites.

Just search for "iodine clock reaction demonstration."

The chemicals should be freshly prepared before the demonstration.

You must practice the demonstration beforehand to get the timing right.

Lots of luck!