Home Science Mysteries What Happens When You Mix Coke and Milk Together? (Video)

What Happens When You Mix Coke and Milk Together? (Video)

Do you like to drink milk? Do you also like to drink Coke? Why not try them mixed together.

Here’s a experiment for you to try. The milk in the video is normal milk, which has a bunch of proteins and calcium. Coke has phosphoric acid.

Acid, even relatively mild acid, curdles milk upon contact. When you mix milk with Coke, the phosphoric acid goes to work, and the milk curdles into little clumps. What is surprising is the reaction with the Coke.

The Coke’s phosphoric acid teams up with the calcium atoms from the milk to make tricalcium phosphate and hydrogen.

The tricalcium phosphate settles to the bottom, and nearly all of Coke’s color disappears.

All that’s left is a bottle that is full of clear liquid, with the acid and protein clumped together at the bottom of the bottle. And there’s probably a lot of hydrogen gas dissolved in there as well.

After the tricalcium phosphate precipitates out when milk and Coke are mixed, the liquid becomes clear. (Screenshot/YouTube)

Not sure how this would taste though. If you have ever tried it, let me know.


Troy Oakes
Troy was born and raised in Australia and has always wanted to know why and how things work, which led him to his love for science. He is a professional photographer and enjoys taking pictures of Australia's beautiful landscapes. He is also a professional storm chaser where he currently lives in Hervey Bay, Australia.

Most Popular

US Commerce Department Bans Investments in Chinese Military-Backed Companies

On Thursday, Nov. 12, 2020, the Trump administration issued an executive order barring investments in private companies with close ties to Chinese military, intelligence,...

4 Tips on How to Teach Kids Generosity During the Holidays

The Christmas holiday season is upon us and it will soon be time for celebrations, gift-giving, and other happy occasions. For many parents, this...

A Chinese Entrepreneur Predicts His Tragic Ending

In 1985, Sun Dawu, who has become a Chinese entrepreneur, and his wife started their business with a thousand chickens and 50 pigs. Ten...

Researchers Find Connection Between Household Chemicals and Gut Microbiome

A team of researchers for the first time has found a correlation between the levels of bacteria and fungi, the gut microbiome, in the...