"Magic liquid" from the "Colorful chemistry" set
Channel: MEL Chemistry
Date: 2018-06-18

Perform this amazing experiment at home with MEL Science: https://melscience.com/en/experiments/magic-liquid/

Safety
* Put on protective gloves and eyewear.
* Conduct the experiment on the plastic tray.

Disposal
* Dispose of solid waste together with household garbage.
* Pour solutions down the sink. Wash with an excess of water.

Step-by-step instructions
1. First, prepare the pH indicator thymol blue solution.
2. Now, prepare samples of substances that might affect the solution pH in different ways.
3. Add the pH indicator solution to each of the samples.
4. pH indicators are substances which, when added to a solution, change color corresponding to the solution’s pH value. One can determine a solution’s pH according to the indicator color.