Colour Changing liquid Clock reaction.
Basically you make two clear liquids, mix them together and TAH DAH. You get a dark coloured liquid. It was pretty cool, we did the experiment 3 times.
First you pound the Vitamin C tablet (2 if they're 500mg) in a bag.
|Smash that tablet|
|Mix mix mix mix mix|
|the two (almost) clear liquids.|
|Starting to change|