Pop Rocks are just sugar and high-pressure CO2, but making them at home is way harder than it looks. In this video, we use three different methods to try and capture carbon dioxide in sugar: a middle-school chemical reaction, a state transition, and biological production!

Pop Rocks® is a registered trademark of Zeta Espacial S.A.; ACS is not affiliated with Zeta Espacial S.A. To learn more about Pop Rocks®, visit http://www.pop-rocks.com.

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Credits:
Executive Producers:
George Zaidan
Hilary Hudson

Producers:
Elaine Seward
Andrew Sobey
Darren Weaver

Writer/Host:
Alex Dainis, PhD

Scientific consultants:
Michelle Boucher, PhD
Leila Duman, PhD
Richard Hartel, PhD

Sources:

How much pressure is inside a pop rock:
https://www.mentalfloss.com/article/525313/what-makes-pop-rocks-pop
https://allsensors.com/blog/tag/champagne/#:~:text=Dependingonthewineand,properprecautionsarenottaken.

Pop rocks were originally invented to be an instant soda:
https://www.youtube.com/watch?v=Fo8QwdhrIv4

Enzymes on your tongue convert CO2 into protons:
https://www.scientificamerican.com/podcast/episode/carbonation-has-a-taste-09-10-16/; https://www.ncbi.nlm.nih.gov/labs/pmc/articles/PMC3654389/

Your tongue detects CO2 as sour:
​​https://www.wired.com/2009/10/your-tongue-the-carbon-dioxide-sensor/

Why do we like carbonated foods?
​​https://www.popsci.com/science/article/2013-07/fyi-carbonated-water-addictive/

Claire Saffitz Makes Pop Rocks
https://www.bonappetit.com/video/watch/gourmet-makes-pastry-chef-attempts-to-make-gourmet-pop-rocks

Citric Acid and Baking Soda Reaction:
https://www.acs.org/content/dam/acsorg/education/outreach/kidschemistry/chemical-reaction-kids-and-chemistry-kit-teacher-guide.pdf

Fizzy Fruit recipe:
https://www.youtube.com/watch?v=So4ZrzBkJsA

Yeast produce CO2
https://www.scientificamerican.com/article/single-celled-science-yeasty-beasties/#:~:text=Whenyeastseatsugarand,processisknownasfermentation.&text=Whensaltbakingsodaor,whenonlysugarwasused.

What temperature kills yeast?
https://www.google.com/search?q=what+temp+kills+yeast&oq=what+temp+kills+yeast&aqs=chrome..69i57j0i22i30l9.3979j1j7&sourceid=chrome&ie=UTF-8#:~:text=YeastKillBaking,processesyeast-kill