Detection of acids and bases using red cabbage juice © Siemens Stiftung 2021 CC BY-SA 4.0 international

Detection of acids and bases using red cabbage juice

Interactive

Matching exercise:
What substance can be added to change the color of red cabbage juice? What color does it turn, and what pH range does this color indicate?

English, Spanish, German
Interactive
SWF (887.3 kByte) HTML (562.0 kByte)
2021-04-12
Five everyday products are to be classified with respect to their properties as acidic (a), basic (b), or neutral (n). For this exercise, photos of the products as well as the associated indicator solutions (red cabbage juice) are to be matched to the corresponding position of the pH range.
The photos that have been matched can be dragged back or moved among the placeholders. The solution can be shown at any time during the exercise. The current status is preserved, which allows the exercise to be continued when the solution is hidden again. The matches can be evaluated by clicking the respective “Check” button. Any incorrect matches will be reset and can be matched again.

Information and ideas:
The students can test additional everyday products for their pH value using red cabbage juice as an indicator. For example, what makes red cabbage juice turn yellow, and what pH value does this color indicate?
Excercise
Biology; Chemistry
Grade 7 to 9; Grade 10 to 13
Middle/high school
Acids; Base (chemistry); Stomach
Siemens Stiftung Media Portal
MediaHouse GmbH using material from: Siemens Stiftung
© Siemens Stiftung 2021
Stay up-to-date!

About four times a year, we inform you about new media on this portal as well as current studies and events related to OER and STEM.

Media Portal newsletter – register now

About four times a year, we inform you about new media on this portal as well as current studies and events related to OER and STEM.

*Required fields


Language