Feb 27, 2020 · The blue bottle chemistry demonstration is a classic color change chem demo. Learn how to perform the experiment and how it works.

In this demonstration, the redox indicator Methylene blue can be oxidised many times by shaking. Includes kit list and safety instructions.

The blue bottle experiment is a color-changing redox chemical reaction. An aqueous solution containing glucose, sodium hydroxide, methylene blue is prepared in a closed bottle containing some air.

Jun 9, 2025 · The blue bottle reaction is easy to perform and uses readily available materials. Here are instructions for performing the demonstration, explanations of the chemistry involved, and options for …

A video of the Blue Bottle Experiment activity, presented by Irwin Talesnick, is available in Introduction to Reaction Rates, part of the Flinn Scientific—Teaching Chemistry eLearning Video Series.

Sep 15, 2025 · To perform the experiment, the glucose and sodium hydroxide are mixed together in the flask or beaker, followed by the addition of the copper sulfate solution. As the reaction progresses, …

A half-full bottle of colorless liquid turns blue when shaken, and when the bottle is allowed to sit still, the color fades. Shaking the bottle again causes the color to reappear like magic!

Dextrose (glucose) is dissolved in this solution and methylene blue is added. When the indicator is initially added to the solution, the solution turns blue. The color gradually fades and becomes …

In this video, we demonstrate the fascinating blue bottle experiment, where the combination of a reducing agent, methylene blue, glucose and oxygen leads to a dynamic color change.

You can use this reaction to experiment with different sweet syrups and jams and figure out which of them contain carbohydrates that methylene blue can oxidize!