Fizzy water (task)
Why does water spray out of a bottle of sparkling mineral water that has been shaken before it is opened? And why does sparkling mineral water in a glass bubble more vigorously if you add some salt to it?
Incremental hints for answering this task are available under “Fizzy water (hints for printing)” or “Fizzy water (interactive hints)” on the media portal of the Siemens Stiftung. The worksheet includes QR codes for using the interactive hints online and viewing the solution.
Explanations of the experiment for the teacher are found in “Fizzy water (teacher information).”