What gives curly hair its curl?

Melissa and Jam delve into the fascinating chemistry behind film photography. They reminisce about their childhood experiences with analog cameras and discuss the shift to digital cameras. Melissa, a chemist, explains the complex chemical processes involved in capturing and developing photos on film, focusing on the role of light-sensitive silver bromide. The episode also includes shout-outs to community members who spurred the topic and closes with personal stories and favorite film photos. Get ready to explore the intersection of chemistry and photography while revisiting nostalgia from the days of film cameras. 00:00 Nostalgia: From Film to Digital Cameras 00:38 The Shift to Digital Photography 01:52 Introduction to the Podcast 02:01 Shoutouts and Listener Requests 12:32 The Chemistry Behind Film Photography 28:03 Amplifying the Latent Image 28:24 Creating the Negative 29:11 Fixing the Image 29:51 Understanding the Negative 30:30 Inverting the Negative 31:15 Early Photography Challenges 32:12 Explaining the Process 33:21 Chemical Reactions in Film Development 34:44 Scanning and Developing Film 41:15 Personal Film Photography Stories 51:29 Supporting the Show ★ 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 References from this episode: https://pubs-acs-org.libproxy.library.unt.edu/doi/epdf/10.1021/ed052p622?ref=article_openPDF https://pubs-acs-org.libproxy.library.unt.edu/doi/10.1021/acs.jchemed.6b00400 https://pubs-acs-org.libproxy.library.unt.edu/doi/10.1021/ed081p694 https://edu.rsc.org/experiments/making-a-photographic-print-using-silver-chloride/454.article https://www.acs.org/content/dam/acsorg/education/resources/highschool/chemmatters/articlesbytopic/metals%20and%20nonmetals/chemmatters-feb2006-digital-photo.pdf https://www.researchgate.net/profile/Rolf-Steiger/publication/279964154_CHEMICAL_SENSITIZATION_OF_SILVER_BROMIDE/links/5a7d8b55aca272341aef2f6f/CHEMICAL-SENSITIZATION-OF-SILVER-BROMIDE.pdf https://www.acs.org/education/celebrating-chemistry-editions/2024-ncw/chemistry-of-polaroids.html https://cen.acs.org/articles/87/i12/Instant-Film.html https://www.acs.org/education/whatischemistry/landmarks/land-instant-photography.html https://pubs-acs-org.libproxy.library.unt.edu/doi/epdf/10.1021/ed051p72?ref=article_openPDF Thanks to our monthly supporters Vince W Julie S. Heather R Autoclave Chelsea M Dorien VD 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

#027 Rebroadcast Originally Published January 23, 2020 This week, Melissa and Jam dive into the chemistry of something that may not seem like chemistry at first: hair. Curly hair to be specific. What makes hair curl? Also what is hair in the first place? Why can hair be so radically different? Alright curly girls, curly guys, and curly folks, let's find out. ★ 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   References from this episode Biochemistry, Edition 4 - Garret and Grisham The Chemistry of Hair - C. S. Whewell, Ph.D., F.R.I.C., F.T.I. The Science of Curls -  Leidamarie Tirado-Lee Bad Hair Days? Chemistry to the Rescue - Marlene M. Gutierrez     Thanks to our monthly supporters Vince W Julie S. Heather R Autoclave Chelsea M Dorien VD 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  

Melissa and Jam dive into the definition and implications of organic foods. They explore what organic means according to USDA standards, dissect common misconceptions about pesticide use, and discuss whether organic produce is actually healthier. This detailed analysis includes Melissa's scientific research process and draws on trusted sources to clarify the nuanced debate around organic foods. Learn about the importance of fruit and vegetable intake, regardless of whether they are organic, and get practical tips for washing produce to minimize pesticide residue. 00:00 Introduction and Recap 00:21 Discussing Organic Foods 00:46 Podcast Setup and Personal Anecdotes 01:41 Health and Diet Insights 04:12 Research and Credibility 07:59 Understanding Organic Standards 22:34 Organic Pesticides and Misconceptions 26:11 Scientific Pettiness and Review Articles 27:41 Engaging Media and Petty Scientists 29:19 Pesticide Residues in Organic vs. Non-Organic Foods 35:14 Nutritional Content of Organic Foods 38:44 Health Impacts and Misconceptions 43:47 Practical Advice and Final Thoughts 55:12 Listener Questions and Community Support ★ 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 References from this episode: https://pmc-ncbi-nlm-nih-gov.libproxy.library.unt.edu/articles/PMC5837313/ https://www.cancer.gov/news-events/cancer-currents-blog/2020/colorectal-cancer-rising-younger-adultshttps:// www.cdc.gov/nchs/fastats/leading-causes-of-death.htmhttps:// www.aap.org/en/patient-care/environmental-health/promoting-healthy-environments-for-children/food-safety/https://pubs.acs.org/doi/10.1021/cen-v078n011.p011 https://pmc-ncbi-nlm-nih-gov.libproxy.library.unt.edu/articles/PMC7019963/#notes3 https://pmc-ncbi-nlm-nih-gov.libproxy.library.unt.edu/articles/PMC7146625/ https://pmc-ncbi-nlm-nih-gov.libproxy.library.unt.edu/articles/PMC7146577/ https://pmc-ncbi-nlm-nih-gov.libproxy.library.unt.edu/articles/PMC3546364/ https://www.acpjournals.org/doi/10.7326/0003-4819-157-5-201209040-00007 https://www.acpjournals.org/doi/10.7326/0003-4819-158-4-201302190-00018 https://www.acs.org/education/chemmatters/past-issues/archive-2013-2014/genetic-organic-food.html https://www.johnson.k-state.edu/programs/lawn-garden/agent-articles-fact-sheets-and-more/agent-articles/environment/organic-does-not-mean-pesticide-free.html https://www-sciencedirect-com.libproxy.library.unt.edu/topics/agricultural-and-biological-sciences/pesticide-residue https://pubs-acs-org.libproxy.library.unt.edu/doi/10.1021/jf103902t Thanks to our monthly supporters Vince W Julie S. Heather R Autoclave Chelsea M Dorien VD 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

This episode of 'Chemistry for Your Life' features Melissa and Jam tackling various chemistry questions sourced from the 'Explain Like I'm Five' subreddit. They aim to explain complex chemistry concepts in a manner even a 5-year-old could understand. Questions discussed include why water isn't flammable, how carbonation works, the nature of colors and atoms, cooking processes, caloric changes during cooking, and why drawings on a steamy mirror reappear. The episode emphasizes simplifying complex ideas and making chemistry relatable to everyday life. 00:00 Introduction and Setting the Scene 00:50 Explaining Chemistry Like You're Five 01:31 Welcome to Chemistry for Your Life 02:30 Why Isn't Water Flammable? 07:00 How Does Carbonation Work? 09:48 Are Atoms Different Colors? 13:12 What Happens When Cooking Food? 14:14 Understanding the Science of Cooking 15:12 The Chemistry Behind Frying and Toasting 16:35 Exploring the Role of Ingredients in Cooking 17:57 Calories and Cooking: What Changes? 22:49 The Mystery of Steamy Mirror Drawings 27:06 Wrapping Up and Community Thanks ★ 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 Thanks to our monthly supporters Vince W Julie S. Heather R Autoclave Chelsea M Dorien VD 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

Melissa and Jam discuss the multifaceted debate surrounding the use of the widely known weed killer, Roundup, specifically its active ingredient, glyphosate. Prompted by a listener's question, they explore the good, the bad, and the ugly aspects of glyphosate, including its effectiveness in agriculture, potential health risks, and environmental impacts. They delve into scientific studies, regulatory concerns, and personal anecdotes to provide a comprehensive overview of this controversial herbicide. 00:00 Introduction to Weed Killers 01:34 Listener's Question on Glyphosate 03:24 Understanding Glyphosate 08:32 The Good and Bad of Glyphosate 11:09 Health Concerns and Controversies 18:44 Whistleblowing and Evidence on Glyphosate 19:05 Human Health Impacts of Glyphosate 20:37 Environmental Effects of Glyphosate 23:00 Regulatory Considerations and Future Actions 26:16 Personal Decisions and Practical Advice 31:12 Community Engagement and Support ★ 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 References from this episode: https://www.chemistryworld.com/podcasts/glyphosate/6885.article https://www.chemistryworld.com/opinion/how-a-herbicide-illustrates-the-many-ways-chemicals-are-put-to-the-test/4021190.article https://www-sciencedirect-com.libproxy.library.unt.edu/science/article/pii/S2152265021001518#coi0001 - Note that The author has been paid as an expert in glyphosate litigation. https://pmc.ncbi.nlm.nih.gov/articles/PMC8223940/ Note that author PB acted as consultant for glyphosate producers, on matters not related to glyphosate https://pmc.ncbi.nlm.nih.gov/articles/PMC11354939/#notes5 Not notes here, but they essentially said it seems like we need more studies, there seems to be some correlation.  https://www-sciencedirect-com.libproxy.library.unt.edu/science/article/pii/S0048969717330279?casa_token=0V1BAIP8ZFgAAAAA:0O5yGT0FK4sbuZBIhieomHGxbm-0Y_Y7VtoPEaHFcArD9FS3aczcDKHV0nU7KfwA0erzOVNHwA#s0080 - Some salaries paid for by organizations, wasn’t clear their relationship to glyphosate, but no disclosure or conflict of interest statement was made here.  https://www.mdpi.com/1422-0067/23/9/4605 - No conflicts of interest https://www.science.org/doi/10.1126/science.abf7482 Thanks to our monthly supporters Vince W Julie S. Heather R Autoclave Chelsea M Dorien VD 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

#212 Melissa and Jam explore the concept of ozone and its impact on air quality in airplanes. Melissa explains the chemical reaction of ozone, why it's significant in organic chemistry, and how it can lead to discomfort in air travel by interacting with the oils on our skin. They also discuss various tips for flying and the potential benefits of noise-canceling headphones and lounge access for frequent flyers. The episode sheds light on why people often feel unwell on planes, highlighting the Pigpen Effect, where leftover oils from previous passengers can react with ozone to create a micro-cloud of pollutants. 00:00 Introduction to Ozone Lysis 00:09 Ozone Lysis in Organic Chemistry 00:25 Personal Anecdotes and Misconceptions 01:10 Ozone and Airplane Discomfort 01:49 Chemistry of Airplane Air 02:41 Ozone Lysis and Human Interaction 06:44 Catalytic Converters in Airplanes 11:58 The Pigpen Effect 16:50 Historical Context and Modern Concerns 18:38 Recap and Further Discussion 20:23 Understanding the Pigpen Effect 20:58 Chemical Reactions of Aldehydes and Ketones 22:11 Volatility and Airplane Air Quality 22:42 The Gross Reality of Airplane Seats 23:31 Airplane Hygiene and Mask-Wearing 25:08 Flying Tips and Tricks 29:54 Travel Credit Cards and Lounge Access 34:36 Sleeping on Planes and Noise-Canceling Headphones 37:43 Final Thoughts and Community Engagement ★ 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 References from this episode: https://cen.acs.org/safety/consumer-safety/Periodic-Graphics-chemistry-airplane-air/102/i26 https://www.acs.org/catalyzing-change/when-a-good-relationship-turns-toxic-ozone-on-airplanes.html https://pubs-acs-org.libproxy.library.unt.edu/doi/full/10.1021/es3046795 https://youtu.be/hM9P1_Xuayk?t=107s https://www.faa.gov/sites/faa.gov/files/data_research/research/med_humanfacs/cer/OzonePassengerCabins.pdf https://www.faa.gov/sites/faa.gov/files/data_research/research/med_humanfacs/cer/OzonePassengerCabins.pdf https://pmc.ncbi.nlm.nih.gov/articles/PMC3683839/ Thanks to our monthly supporters Vince W Julie S. Heather R Autoclave Chelsea M Dorien VD 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

#110 Rebroadcast Originally Published August 26, 2021 We've all heard about it. And most likely you've heard that it's in danger. But what is the ozone layer in the first place? And once we learn that, how about figuring out why it's in danger? Ok let's do it.   References from this episode https://www.chemistryworld.com/podcasts/ozone/3005901.article https://youtu.be/XGDU6RvUVuk https://www-sciencedirect-com.libproxy.library.unt.edu/topics/earth-and-planetary-sciences/atmospheric-ozone Solomon’s organic chemistry 11th edition https://www.acs.org/content/acs/en/education/resources/highschool/chemmatters/past-issues/archive-2012-2013/ozone-layer-our-global-sunscreen.html     ★ 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 Thanks to our monthly supporters Vince W Julie S. Heather R Autoclave Chelsea M Dorien VD 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  

Question and Response #67 Melissa and Jam dive into a series of chemistry-related questions from their audience. From understanding why wintergreen mints spark in the dark to the science of pregnancy tests and heavy water, the episode covers a broad range of fascinating topics. They also discuss the role of moisturizers, dispel myths about chapstick, and explore the curious case of tumor-related hormones. Additionally, the hosts answer questions related to their educational resources and touch on the advantages of lifelong learning. Join them for an engaging discussion that satisfies both everyday curiosity and scientific intrigue. 00:00 Introduction and Greetings 00:33 Chemistry for Your Life Podcast Begins 00:52 Chemistry Support and Wired Videos 02:23 First Question: Fluorescence and Braces 07:26 Second Question: HCG and Tumors 10:57 Third Question: Heavy Water 12:39 Discussion on Heavy Water and Isotopes 18:06 Movie Reference: The Rookie 20:35 Formal Request: Watch Oppenheimer 21:39 Discussing Movies and Activities 21:59 The Vine and Oppenheimer 23:18 Film Photography Plans 24:07 Moisturizers and Dry Skin 25:53 Chapstick Myths 27:59 Teaching at UNT 30:55 Birdwatching and Lifelong Learning 34:08 Updating the Website 37:39 Resources for Educators 39:49 Closing Remarks and Acknowledgements ★ 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 Thanks to our monthly supporters Vince W Julie S. Heather R Autoclave Chelsea M Dorien VD 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

#211 Melissa and Jam delve into the chemistry behind increased flatulence on airplanes. They explore how changes in air pressure affect gas expansion in the human body, leading to more frequent gas release during flights. The discussion covers the physiology of high altitude flatus expulsion (HAFE), personal anecdotes, and practical advice for managing this phenomenon. Additionally, they touch on how airplane cabin air is regulated and hint at more topics related to airplane air quality in the next episode. 00:00 The Unpleasant Reality of Airplane Odors 01:02 Introducing the Chemistry Behind Airplane Gas 01:51 Meet the Hosts and Episode Dedication 02:30 Listener's Question: Why So Gassy on Flights? 03:47 Exploring Air Pressure and Gas Expansion 05:59 The Science of Airplane Cabin Pressure 15:02 Personal Stories and Practical Examples 18:15 Balancing Safety and Comfort in Airplane Cabin Pressure 19:33 The Impact of Carbon Filters on Airplane Seats 20:02 Personal Anecdotes: The Struggles of Holding in Gas 22:53 The Science Behind Gas Pain and Altitude Sickness 29:53 Travel Tips and Memorable Plane Stories 34:41 Wrapping Up and Listener Engagement ★ 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 References from this episode: Thanks to our monthly supporters Vince W Julie S. Heather R Autoclave Chelsea M Dorien VD 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

Chemistry at Home: Chromatography Rebroadcast Originally Published June 29, 2020 Here's another bonus episode dedicated to teaching a specific chemistry experiment you can do at home. This month, we see what happens when we combine markers, coffee filters, and water. Let's do chemistry! Watch the experiment here!   ★ 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   Thanks to our monthly supporters Vince W Julie S. Heather R Autoclave Chelsea M Dorien VD 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