Denis Koshevoi
Substances Up Close
Interested in chemistry? Then you're in the right place. Substances Up Close is a chemistry podcast about the substances that shape civilization and everyday life, from iron and sulfuric acid to polyethylene and vitamin C. My name is Denis Koshevoi, a chemist and chemistry tutor, and I'll be your host. The concept is simple: one episode, one substance. In each episode we’ll explore a substance: its properties, the history behind it, and how it’s used. You’ll also learn important chemical concepts and, from time to time, some practical tips that will help you stay informed and make your life a...
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Episoder
Sodium Hydroxide: The Caustic King 02.11.2026 18:36
Sodium hydroxide is the most important base today, produced by millions of tons every year. It’s a very caustic compound that is able to turn fats into soap, eat through hair and food clogs in pipes, and a lot more. Enjoy!
Sulfur: The Yellow Beauty 02.11.2026 16:47
Elastic rubber, the smell of burning matches, the smoke above a battlefield, hot volcanic breath, God’s punishment, and unquenchable flames of Hell. What do these have in common? Sulfur! The beautiful yellow element behind it all, in today’s episode.
Capsaicin: The Essence of Spiciness 02.11.2026 17:52
Like spicy food? Then you will like this episode! It's about capsaicin — one of the most important spicy substances found in chili peppers. Enjoy!
Ethylene: Double Benefit 02.11.2026 12:54
Ethylene is quite an important gas both for humanity and nature. It lets us produce stuff like plastic bags, and it’s crucial for development of many plants and their crops. Enjoy!
Carbon Monoxide: Deadly and Undetectable 02.11.2026 18:14
Carbon monoxide is a toxic gas, undetectable by human senses. It kills about 30,000 people every year worldwide. Where we encounter it and how to protect yourself — find out in this episode!
Iron: The Pillar of Civilization 02.11.2026 15:35
Iron is the most important metal for humanity. We dive into the forms of iron found in nature, how it's produced, its alloys, and how to fight rust. Enjoy!
Sodium Hydroxide: The Caustic King 06.10.2026 18:36
Sodium hydroxide is the most important base today, produced by millions of tons every year. It’s a very caustic compound that is able to turn fats into soap, eat through hair and food clogs in pipes, and a lot more. Enjoy!
Sulfur: The Yellow Beauty 06.09.2026 16:47
Elastic rubber, the smell of burning matches, the smoke above a battlefield, hot volcanic breath, God’s punishment, and unquenchable flames of Hell. What do these have in common? Sulfur! The beautiful yellow element behind it all, in today’s episode.
Capsaicin: The Essence of Spiciness 05.08.2026 17:52
Like spicy food? Then you will like this episode! It's about capsaicin — one of the most important spicy substances found in chili peppers. Enjoy!
Ethylene: Double Benefit 21.06.2026 12:54
Ethylene, from plastic bags to ripening fruits. Enjoy!
Carbon Monoxide: Deadly and Undetectable 21.05.2026 18:14
Carbon monoxide is a toxic gas, undetectable by human senses. It kills about 30,000 people every year worldwide. Where we encounter it and how to protect yourself — find out in this episode!
Iron: The Pillar of Civilization 24.04.2026 15:35
Iron is the most important metal for humanity. We dive into the forms of iron found in nature, how it's produced, its alloys, and how to fight rust. Enjoy!
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