In this continuation of our two-part series, Melissa and Jam dive into the intriguing chemistry behind color film and Polaroid photography. The episode picks up from the previous discussion on black and white film, focusing on color theory and how it applies to both traditional and instant photography. Listeners will learn about the science of additive and subtractive colors, how multiple layers of dye-sensitized silver halide work together to capture images, and the unique processes involved in developing these images. For those fascinated by the intersection of chemistry and photography, this episode is a must-listen.

00:00 Introduction and Recap
01:42 Understanding Color Theory
05:08 Additive and Subtractive Colors
07:00 Color Photography Basics
08:45 Film Development Process
13:03 Negative and Positive Images
17:33 Practical Applications and Examples
23:28 Understanding Negative Images in Photography
24:26 Principles of Color Photography
25:22 Exploring Color Negatives and Filters
27:14 Layers and Sensitizers in Color Film
29:51 The Development Process of Color Film
34:22 Introduction to Polaroid Photography
35:20 The Chemistry Behind Polaroid Development
40:06 Fascination with Photography and Color Theory
40:50 Favorite Black and White TV Shows
44:12 Closing Remarks and Community Shoutouts

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References from this episode:

1. https://pubs-acs-org.libproxy.library.unt.edu/doi/epdf/10.1021/ed052p622?ref=article_openPDF
2. https://pubs-acs-org.libproxy.library.unt.edu/doi/10.1021/acs.jchemed.6b00400
3. https://pubs-acs-org.libproxy.library.unt.edu/doi/10.1021/ed081p694
4. https://edu.rsc.org/experiments/making-a-photographic-print-using-silver-chloride/454.article
5. https://www.acs.org/content/dam/acsorg/education/resources/highschool/chemmatters/articlesbytopic/metals%20and%20nonmetals/chemmatters-feb2006-digital-photo.pdf
6. https://www.researchgate.net/profile/Rolf-Steiger/publication/279964154_CHEMICAL_SENSITIZATION_OF_SILVER_BROMIDE/links/5a7d8b55aca272341aef2f6f/CHEMICAL-SENSITIZATION-OF-SILVER-BROMIDE.pdf
7. https://www.acs.org/education/celebrating-chemistry-editions/2024-ncw/chemistry-of-polaroids.html
8. https://cen.acs.org/articles/87/i12/Instant-Film.html
9. https://www.acs.org/education/whatischemistry/landmarks/land-instant-photography.html
10. https://pubs-acs-org.libproxy.library.unt.edu/doi/epdf/10.1021/ed051p72?ref=article_openPDF

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Melissa and Jam tackle a variety of questions and corrections from their listeners. They dive into topics such as the effectiveness of baking soda and vinegar as cleaning agents, the science behind kombucha carbonation, the structural differences in Panko breadcrumbs, and how polymer clays harden in the oven versus air dry clay. They also explore fun anecdotes from the community about glow-in-the-dark items and discuss how Monster energy drinks can explode when frozen. The episode provides valuable insights into everyday chemistry while addressing common myths and misconceptions.

00:00 Introduction and Teasers
00:34 Corrections and Community Feedback
02:14 Kombucha Fermentation Discussion
10:31 Baking Soda and Vinegar Cleaning Debate
15:45 Adhesives for Panko Breadcrumbs
16:59 Greek Yogurt and Panko Breadcrumbs Recipe
18:02 The Science Behind Panko Breadcrumbs
19:10 Ozone Layer and COVID-19 Impact
21:43 Exploding Monster Energy Drinks
23:44 Mel's Research and Published Articles
25:23 Polymer Clays and Air Dry Clays
26:50 Alternative Career Choices
31:30 Listener Anecdotes and Community Engagement
34:51 Supporting the Show and Final Thoughts

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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.

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References from this episode:

1. https://pubs-acs-org.libproxy.library.unt.edu/doi/epdf/10.1021/ed052p622?ref=article_openPDF
2. https://pubs-acs-org.libproxy.library.unt.edu/doi/10.1021/acs.jchemed.6b00400
3. https://pubs-acs-org.libproxy.library.unt.edu/doi/10.1021/ed081p694
4. https://edu.rsc.org/experiments/making-a-photographic-print-using-silver-chloride/454.article
5. https://www.acs.org/content/dam/acsorg/education/resources/highschool/chemmatters/articlesbytopic/metals%20and%20nonmetals/chemmatters-feb2006-digital-photo.pdf
6. https://www.researchgate.net/profile/Rolf-Steiger/publication/279964154_CHEMICAL_SENSITIZATION_OF_SILVER_BROMIDE/links/5a7d8b55aca272341aef2f6f/CHEMICAL-SENSITIZATION-OF-SILVER-BROMIDE.pdf
7. https://www.acs.org/education/celebrating-chemistry-editions/2024-ncw/chemistry-of-polaroids.html
8. https://cen.acs.org/articles/87/i12/Instant-Film.html
9. https://www.acs.org/education/whatischemistry/landmarks/land-instant-photography.html
10. https://pubs-acs-org.libproxy.library.unt.edu/doi/epdf/10.1021/ed051p72?ref=article_openPDF

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#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.

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References from this episode

1. Biochemistry, Edition 4 - Garret and Grisham
2. The Chemistry of Hair - C. S. Whewell, Ph.D., F.R.I.C., F.T.I.
3. The Science of Curls - Leidamarie Tirado-Lee
4. Bad Hair Days? Chemistry to the Rescue - Marlene M. Gutierrez

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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

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References from this episode:

1. https://pmc-ncbi-nlm-nih-gov.libproxy.library.unt.edu/articles/PMC5837313/
2. https://www.cancer.gov/news-events/cancer-currents-blog/2020/colorectal-cancer-rising-younger-adultshttps://
3. www.cdc.gov/nchs/fastats/leading-causes-of-death.htmhttps://
4. 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
5. https://pmc-ncbi-nlm-nih-gov.libproxy.library.unt.edu/articles/PMC7019963/#notes3
6. https://pmc-ncbi-nlm-nih-gov.libproxy.library.unt.edu/articles/PMC7146625/
7. https://pmc-ncbi-nlm-nih-gov.libproxy.library.unt.edu/articles/PMC7146577/
8. https://pmc-ncbi-nlm-nih-gov.libproxy.library.unt.edu/articles/PMC3546364/
9. https://www.acpjournals.org/doi/10.7326/0003-4819-157-5-201209040-00007
10. https://www.acpjournals.org/doi/10.7326/0003-4819-158-4-201302190-00018
11. https://www.acs.org/education/chemmatters/past-issues/archive-2013-2014/genetic-organic-food.html
12. 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
13. https://www-sciencedirect-com.libproxy.library.unt.edu/topics/agricultural-and-biological-sciences/pesticide-residue
14. https://pubs-acs-org.libproxy.library.unt.edu/doi/10.1021/jf103902t

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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

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#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

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References from this episode:

1. https://cen.acs.org/safety/consumer-safety/Periodic-Graphics-chemistry-airplane-air/102/i26
2. https://www.acs.org/catalyzing-change/when-a-good-relationship-turns-toxic-ozone-on-airplanes.html
3. https://pubs-acs-org.libproxy.library.unt.edu/doi/full/10.1021/es3046795
4. https://youtu.be/hM9P1_Xuayk?t=107s
5. https://www.faa.gov/sites/faa.gov/files/data_research/research/med_humanfacs/cer/OzonePassengerCabins.pdf
6. https://www.faa.gov/sites/faa.gov/files/data_research/research/med_humanfacs/cer/OzonePassengerCabins.pdf
7. https://pmc.ncbi.nlm.nih.gov/articles/PMC3683839/

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