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Science for Kids/Why does tonic water not freeze solidly? I gets to a slushy form.

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Besides water, there is also carbonation (CO2), fruit extracts, sugars and Quinine.  The water in the mix does freeze, that is the slush, some of the CO2 comes out of solution when frozen which is why it is nolonger as fizzy when remelted but some of the CO2 binds with the fruit extracts and the Quinine, so it may remain a little fizzy when remelted.  Quinine which is an extract from the back of a tree has a small amount of alcohol in it which is why it does not freeze.  But the alcohol along with the sugars and fruit extract is so minimal that you would need to drink gallons of the stuff to get a buzz.  In the mean time you would get mighty sick from ingesting way to much Quinine.  

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Ralph Salier-Hellendag

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Science Fair Judge for many years and experience with robotics, biology, chemistry, industrial processes, metalurgy and metal forming.

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Science Fair Judge for many years and have helped several students get to state level competition. Most recently 2 of my students received state level awards and one went on to the nationals in Washington DC.

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BA Archaeology - Anthropology
MA Business Anthropology

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