Chemical Mystery #19: Multi-colored Mixture

Color changes

I was recently playing around in the lab and discovered a new experiment that is very easy to carry out, but also results in a variety of mysterious color changes. You can watch it in the video below.

 

Can you describe what is going on in this experiment using your knowledge of chemistry? Let me know your thoughts in the comments! I'll share the solution to this Chemical Mystery in a few days. 

Safety

Safety: Video Demonstration

Demonstration videos presented here are not meant as tools to teach chemical demonstration techniques. They are meant as a tool for classroom use. The demonstrations may present safety hazards or show phenomena that are difficult for an entire class to observe in a live demonstration.

Those performing the demonstrations shown in this video have been trained and adhere to best safety practices.

Anyone thinking about performing a chemistry demonstration should first read and then adhere to the ACS Safety Guidelines for Chemical Demonstrations (2016) These guidelines are also available at ChemEd X.

General Safety

For Laboratory Work: Please refer to the ACS Guidelines for Chemical Laboratory Safety in Secondary Schools (2016).  

For Demonstrations: Please refer to the ACS Division of Chemical Education Safety Guidelines for Chemical Demonstrations.

Other Safety resources

RAMP: Recognize hazards; Assess the risks of hazards; Minimize the risks of hazards; Prepare for emergencies