How to Freeze Soda

How to Freeze Soda

We have previously examined the effect of dissolved carbon dioxide on fizzy drinks. You may have seen the cola/lemonade- Mentos experiment whereby addition of Mentos to cola/lemonade causes the dissolved carbon dioxide to fall out of solution causing a huge pressure rise in the bottle which results in a spectacular cola/lemonade shower1.

In this article we will examine the effect of carbon dioxide as an impurity on the freezing point of soda.

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Experiments you can do at home

Welcome to Dr Hal's Backyard Science, experiments you can try at home. These are experiments that you can try in your garden or house with parental permission and supervision. Each of them comes with some health and safety instructions that an adult must read. The text is reproduced by kind permission of Education in Chemistry a journal of the Royal Society of Chemistry.

The Experiments:

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