Savremena’s students will continue to attend classes from their homes. Students of the first and second grade of Savremena Gimnazija successfully realised an interesting project named the Universal Indicator. With the assistance of their chemistry teacher, Marko Piljević, Savremena’s students isolated anthocyanins from red cabbage and used them to measure pH values of various domestic products.
Vegetables as indicators – acidic or alkaline?
For the purposes of the experiment, and based on different colours of the resulting solutions, students determined the acidity and alkalinity of different products. In contact with anthocyanins, acids cause a decrease, whereas bases cause an increase of the pH value; so, the students obtained a palette of different colours with the help of red cabbage.
You can find interesting and creative videos of Savremena’s students below. Watch them to learn something new. Enjoy!