Chemistry For Your Life

• Why is red food dye banned?

  #208 Melissa and Jam dive deep into the topic of FDA regulations, particularly focusing on food additives like red food dye. They discuss the complexities of the FDA's approval process, the Delaney Clause, and recent changes in the regulation of red dye number 3, which has been banned in response to cancer risks found in rats. They also delve into how other countries like the UK and Canada are ahead of the U.S. in reevaluating approved substances. The episode includes personal anecdotes and a discussion on the role of public awareness in influencing FDA policies. They wrap up with a lighthearted conversation about sprinkles and favorite dyed foods. 00:00 Introduction and FDA Discussion 00:36 Podcast Banter and Hat Story 02:42 FDA's Role and Food Additives 04:48 Red Food Dye Controversy 11:33 FDA Trustworthiness and Public Perception 18:29 Comparing Food Regulations: US vs. Canada 18:50 Trusting the FDA: A Personal Take 20:02 Challenges Faced by the FDA 20:56 Rebranding the FDA: A Fun Idea 22:16 Sprinkles and Donuts: A Sweet Debate 26:51 Favorite Dyed Foods 30:44 Podcast Wrap-Up and Community Shoutouts References from this episode: https://www.sciencedirect.com/science/article/pii/S0890856711009531 https://www.gao.gov/assets/hrd-82-3.pdf https://pubmed-ncbi-nlm-nih-gov.libproxy.library.unt.edu/23026007/ https://www.fda.gov/food/hfp-constituent-updates/fda-revoke-authorization-use-red-no-3-food-and-ingested-drugs https://cen.acs.org/food/food-ingredients/FDA-bans-red3-food-drugs/103/web/2025/01 https://www.acs.org/education/chemmatters/past-issues/2015-2016/october-2015/articial-dyes.html https://cen.acs.org/food/food-ingredients/Editorial-Fewer-risky-food-colors/102/i26 https://pmc.ncbi.nlm.nih.gov/articles/PMC10502305/ Thanks to our monthly supporters Julie S Heather R Autoclave Chelsea M Dorien V Scott B Jessie R Ciara L J0HNTR0Y Jeannette N Cullyn R Erica B Elizabeth P Sarah M Rachel R Letila Katrina B Suzanne P Venus R Lyn S Jacob T Brian K Emerson W Kristina G Timothy P Steven B Chris and Claire S Chelsea B Avishai B Hunter R ★ Support this podcast on Patreon ★ ★ Buy Podcast Merch and Apparel ★ Check out our website at chemforyourlife.com Watch our episodes on YouTube Find us on Instagram, Twitter, and Facebook @ChemForYourLife

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• Chemistry Support: Where does a fart go? (and other questions)

  Question and Response 65 Melissa and Jam delve into a variety of interesting chemistry-related questions sourced from Reddit. They explore why farts stop smelling over time, the non-oily nature of Castile soap, why cookies and candies remain safe to eat at room temperature, and the mechanics behind rice cookers. They also discuss how opening a bottle can freeze its contents and offer reassurance to a chemistry Ph.D. student worried about forgetting basic chemistry knowledge. The episode is filled with insightful explanations, humor, and chemistry support, answering the everyday scientific queries of curious Reddit users. 00:00 Introduction and Reddit Questions Overview 01:44 Where Does a Fart Go? 04:01 Why Cookies and Candy Don't Spoil Quickly 07:31 How Do Rice Cookers Work? 10:52 Why Does Opening a Bottle Freeze the Contents? 15:16 How is Castile Soap Not Oily? 17:18 Forgetting Basic Chemistry as a PhD Student 24:35 Conclusion and Listener Engagement Thanks to our monthly supporters Julie S Heather R Autoclave Chelsea M Dorien V Scott B Jessie R Ciara L J0HNTR0Y Jeannette N Cullyn R Erica B Elizabeth P Sarah M Rachel R Letila Katrina B Suzanne P Venus R Lyn S Jacob T Brian K Emerson W Kristina G Timothy P Steven B Chris and Claire S Chelsea B Avishai B Hunter R ★ Support this podcast on Patreon ★ ★ Buy Podcast Merch and Apparel ★ Check out our website at chemforyourlife.com Watch our episodes on YouTube Find us on Instagram, Twitter, and Facebook @ChemForYourLife

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• Can gasoline freeze?

  #207 Melissa and Jam explore why gasoline doesn't freeze in extremely low temperatures while water and other substances do. They delve into the concepts of intermolecular forces, polarity, and how impurities can affect the freezing and melting points of substances. The discussion includes a comparison of the behavior of different substances at varying temperatures, and a light-hearted conversation on favorite liquids that can exist in both liquid and solid states. They also hint at upcoming merchandise related to the topic. 00:00 Introduction and Setting the Scene 00:43 Why Gasoline Doesn't Freeze 03:10 Chemistry Behind Freezing and Melting 06:43 Intermolecular Forces Explained 15:44 Practical Implications and Fun Facts 20:46 Listener Questions and Closing Remarks References from this episode: Thanks to our monthly supporters Julie S Heather R Autoclave Chelsea M Dorien V Scott B Jessie R Ciara L J0HNTR0Y Jeannette N Cullyn R Erica B Elizabeth P Sarah M Rachel R Letila Katrina B Suzanne P Venus R Lyn S Jacob T Brian K Emerson W Kristina G Timothy P Steven B Chris and Claire S Chelsea B Avishai B Hunter R ★ Support this podcast on Patreon ★ ★ Buy Podcast Merch and Apparel ★ Check out our website at chemforyourlife.com Watch our episodes on YouTube Find us on Instagram, Twitter, and Facebook @ChemForYourLife

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• What's the chemistry of sticky stuff?

  #011 Rebroadcast Why is honey sticky but salt isn’t? What’s the difference between things that stick and things that just feel sticky? In this episode, Melissa and Jam dive into the chemistry behind adhesion, cohesion, and the forces that make substances cling to surfaces (and to our fingers). They explore intermolecular forces, viscosity, and why some things are nearly impossible to separate once they’re bonded. Plus, Jam shares a hilarious mix-up of words, and Melissa breaks down why this topic turned out to be trickier than expected! Topics Covered: • The difference between adhesion and cohesion • Intermolecular forces: the unseen power behind stickiness • Why some things feel sticky while others are just stuck • How temperature and viscosity affect our experience of stickiness • Why hydrogen bonding plays a key role in making substances cling • Listener-submitted answers on the “scientific word for sticky” Thanks to our monthly supporters Julie S Heather R Autoclave Chelsea M Dorien V Scott B Jessie R Ciara L J0HNTR0Y Jeannette N Cullyn R Erica B Elizabeth P Sarah M Rachel R Letila Katrina B Suzanne P Venus R Lyn S Jacob T Brian K Emerson W Kristina G Timothy P Steven B Chris and Claire S Chelsea B Avishai B Hunter R ★ Support this podcast on Patreon ★ ★ Buy Podcast Merch and Apparel ★ Check out our website at chemforyourlife.com Watch our episodes on YouTube Find us on Instagram, Twitter, and Facebook @ChemForYourLife  

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• Can I trust the FDA? (from thalidomide to cough medicine)

  #206 Melissa and Jam address a listener's question about the FDA's reliability in approving products. They discuss the intersection of chemistry, government, and society, focusing on FDA's role in regulating food and drugs. The episode includes a deep dive into the historical thalidomide tragedy, the improvements in the FDA's approval process since then, and the nuances of trusting FDA-approved products. Through personal insights, they emphasize the complexities and challenges faced by the FDA in ensuring public safety. 00:00 Introduction: What is the FDA Up To? 00:18 Listener's Question: Trusting FDA Approvals 01:11 Deep Dive: FDA's Role and Responsibilities 03:35 Case Study: Cold Medicine and Phenylephrine 04:18 Thalidomide: A Historical Lesson 10:11 The Role of Frances Kelsey 13:44 FDA's Evolution and Current Challenges 23:22 Conclusion and Final Thoughts References from this episode: https://www.uchicagomedicine.org/forefront/biological-sciences-articles/courageous-physician-scientist-saved-the-us-from-a-birth-defects-catastrophe https://www.gao.gov/assets/hrd-82-3.pdf https://www.fda.gov/food/hfp-constituent-updates/fda-revoke-authorization-use-red-no-3-food-and-ingested-drugs https://cen.acs.org/food/food-ingredients/Editorial-Fewer-risky-food-colors/102/i26 Thanks to our monthly supporters Julie S Heather R Autoclave Chelsea M Dorien V Scott B Jessie R Ciara L J0HNTR0Y Jeannette N Cullyn R Erica B Elizabeth P Sarah M Rachel R Letila Katrina B Suzanne P Venus R Lyn S Jacob T Brian K Emerson W Kristina G Timothy P Steven B Chris and Claire S Chelsea B Avishai B Hunter R ★ Support this podcast on Patreon ★ ★ Buy Podcast Merch and Apparel ★ Check out our website at chemforyourlife.com Watch our episodes on YouTube Find us on Instagram, Twitter, and Facebook @ChemForYourLife

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