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PODCAST

CHEMDUNN

The podcast that brings your chemistry textbook to life through lively conversations! Our dynamic hosts break down complex topics and concepts into relatable, everyday terms, making learning chemistry accessible and enjoyable for everyone—especially for those that are needing to ace that next exam. Each episode features insightful discussions about common core topics in the typical chemistry curriculum. Say goodbye to monotonous lectures. Get ready to laugh, learn, and ... maybe ... enjoy

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All Episodes

00:08:21

Topic: Molar Mass

CHEMDUNN ·

2025/09/11

This episode discusses molar mass, defining it as the mass of one mole of a substance in grams. It explain that it's numerically equal to an element's atomic mass, making the periodic table a direct tool for calculations. The episode demonstrates how to find molar mass for elements and compounds, including those with parentheses, by systematically adding the masses of all constituent atoms. It emphasizes that mastering this skill is crucial for all quantitative chemistry, as it provides the

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00:08:03

Topic: Simple Organic Nomenclature

CHEMDUNN ·

2025/09/09

This episode introduces organic nomenclature, a new system for naming hydrocarbons like alkanes and alkenes. Alkanes (single bonds) are named using a prefix for the carbon chain length followed by -ane. Alkenes (double bonds) use the same prefixes but end with -ene and require a number to indicate the double bond's location. This systematic approach is essential for navigating organic chemistry, as it's based on the molecule's structure rather than charges.

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00:10:43

Topic: Acids Nomenclature

CHEMDUNN ·

2025/09/09

This episode explains acid naming, which combines rules from both ionic and covalent nomenclature. Acids are split into two types: binary acids and oxyacids. Binary acids (hydrogen + a nonmetal) are named using the pattern hydro- + nonmetal root + -ic acid, such as with hydrochloric acid (HCl). Oxyacids (hydrogen + a polyatomic ion) are named based on the polyatomic ion's suffix: -ate becomes -ic acid, and -ite becomes -ous acid. This system helps to clearly name acids and write their formulas

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00:10:29

Topic: Covalent Compound Nomenclature

CHEMDUNN ·

2025/09/09

This episode explains the systematic rules for naming binary covalent compounds. Unlike ionic compounds that are named by balancing charges, covalent compounds are named by counting atoms and using numerical prefixes. The first element is named normally, while the second element gets an "-ide" ending. Prefixes like "di-" or "tri-" indicate the number of atoms, with "mono-" only used for the second element. The episode also notes common exceptions like water

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00:08:10

Topic: Introduction to Light

CHEMDUNN ·

2025/09/07

This episode explores the properties of light and its connection to chemistry. It explains that light is a form of electromagnetic radiation that acts as both a wave and a particle (photon). Key relationships are introduced: c=λv, which links wavelength and frequency, and Planck's equation, E=hv, which shows energy is proportional to frequency. The episode highlights that atoms absorb or emit light in specific amounts of energy, which explains why each element has a unique color

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00:10:02

Topic: Shielding and Effective Nuclear Charge

CHEMDUNN ·

2025/09/07

This episode explores how electron shielding and effective nuclear charge are crucial for understanding atomic behavior and periodic trends. It explains that electron shielding occurs when inner-shell electrons act like a physical barrier, blocking the full positive charge of the nucleus from reaching the outer electrons. This creates a reduced attraction known as the effective nuclear charge (Zeff). This key concept helps explain why atomic radius decreases across a period (because Zeff

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00:09:53

Topic: Significant Figures

CHEMDUNN ·

2025/09/06

This episode explains significant figures, which are the meaningful digits in a number that reflect a measurement's precision. It outlines rules for identifying them: non-zero digits are always significant; leading zeros are never significant; and trailing zeros are significant only if there's a decimal point. It notes that scientific notation is the best way to avoid ambiguity. The rules for calculations are different for addition/subtraction (limited by decimal places) versus

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00:10:30

Topic: Intermolecular Forces

CHEMDUNN ·

2025/09/06

This episode explains intermolecular forces (IMFs), the attractions between molecules that determine physical properties. The three main types are: London dispersion forces (present in all molecules and weakest), dipole-dipole interactions (between polar molecules), and hydrogen bonds (the strongest, occurring when H is bonded to N, O, or F). It emphasizes that a molecule's polarity determines which IMFs are present. The stronger the IMFs, the higher a substance's boiling point, viscosity,

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00:07:58

Topic: VSEPR Theory

CHEMDUNN ·

2025/09/06

This episode explains VSEPR (Valence Shell Electron Pair Repulsion) theory, a method for predicting the three-dimensional shapes of molecules. The core principle is that electron pairs around a central atom repel each other and arrange themselves as far apart as possible. It outlines a five-step process that distinguishes between electron geometry (the arrangement of all electron pairs) and molecular geometry (the arrangement of only the atoms). They use water and ammonia as examples to show how

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00:08:47

Topic: Formal Charge

CHEMDUNN ·

2025/09/05

This episode explains formal charge, a tool for evaluating Lewis structures. It defines formal charge with the formula FC = V - N - B/2 and outline key rules for its use, such as minimizing charges and placing negative charges on more electronegative atoms. It shows how formal charge helps choose the best structure for molecules like carbon monoxide and justifies expanded octets. The episode stresses that formal charge provides a systematic way to determine the most realistic molecular

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00:06:30

Topic: Resonance

CHEMDUNN ·

2025/09/05

This episode explains resonance, where a molecule cannot be accurately represented by a single Lewis structure. Resonance occurs when multiple valid Lewis structures can be drawn by moving only electrons, not atoms. The real molecule is a resonance hybrid, a blend of all possible structures. This electron delocalization leads to increased molecular stability and identical bond lengths that are an average of single and double bonds. The episode uses the carbonate ion (CO23-) as a primary example to

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00:08:27

Topic: Expanded Octet

CHEMDUNN ·

2025/09/05

This episode discusses three exceptions to the octet rule: incomplete octets (e.g., boron in BF3), odd electron species with an unpaired electron (e.g., NO), and expanded octets (e.g., sulfur in SF6). It explains that atoms in period 3 and beyond can have expanded octets due to available d orbitals. It emphasizes that while most molecules follow the rule, these exceptions are predictable based on an atom's period and total electron count and are crucial for understanding molecular behavior.

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00:09:04

Topic: Types of Compounds & Properties

CHEMDUNN ·

2025/09/05

This episode classifies compounds into three types based on their chemical bonds: ionic, covalent, and metallic. Ionic compounds, formed by electron transfer, are brittle with high melting points and conduct electricity when molten. Covalent compounds, formed by electron sharing, have lower melting points and poor conductivity, with the exception of network covalent materials. Metallic compounds, with their "sea" of electrons, are conductive, malleable, and have high melting points. It

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00:07:56

Topic: Lewis Structures

CHEMDUNN ·

2025/09/05

This episode provides a six-step guide to drawing Lewis structures, diagrams that show how valence electrons are arranged in molecules. It explains how to count electrons, identify a central atom, and connect atoms with single or multiple bonds to satisfy the octet rule. Using examples like water and carbon dioxide, it walks through the process and point out common errors. The episode stresses that mastering these structures is essential for understanding molecular properties.

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00:08:01

Topic: UV-VIS Spectrosopy

CHEMDUNN ·

2025/09/05

This episode explains UV-Vis spectroscopy, an analytical technique that measures how much ultraviolet and visible light a substance absorbs. It describe how the instrument works, its main components, and the Beer-Lambert Law (A=ɛbc), which shows that a sample's absorbance is directly proportional to its concentration. It also explains how to use this principle to calculate unknown concentrations and create a calibration curve. It concludes by highlighting the wide range of practical applications

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00:07:18

Topic: Diamagnetism & Paramagnetism

CHEMDUNN ·

2025/09/05

This episode explains that an atom's or molecule's magnetic behavior, either diamagnetism or paramagnetism, is determined by its electron configuration. Diamagnetism is present in all substances with paired electrons, resulting in a weak repulsion from magnets. Paramagnetism occurs in substances with unpaired electrons, which are attracted to magnets. It explains how to predict a substance's magnetic properties by examining its orbital diagram for unpaired electrons, using examples like

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00:09:25

Topic: Quantum Numbers

CHEMDUNN ·

2025/09/01

This episode explains that quantum numbers are a set of four values that serve as a unique address for every electron. The Pauli exclusion principle states that no two electrons can have the same four quantum numbers. The four numbers are: n (principal, for energy level), l (angular momentum, for orbital shape), ml (magnetic, for orbital orientation), and ms (spin, for electron direction). These numbers relate directly to electron configuration and change when an atom forms an ion.

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00:10:27

Topic: Electron Configuration

CHEMDUNN ·

2025/09/01

This episode defines electron configuration as the arrangement of electrons in an atom's orbitals. It explain two notation methods: standard notation (e.g., 1s2) and orbital box notation, and outlines the three fundamental filling rules: the Aufbau principle, Pauli exclusion principle, and Hund's rule. It introduce noble gas shorthand for larger atoms and discuss notable exceptions like chromium and copper, which achieve extra stability with half-filled or completely filled orbitals. The

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00:09:28

Topic: Atomic Orbitals

CHEMDUNN ·

2025/08/21

Think of an electron's path around an atom. If you're imagining a planet orbiting the sun, think again! In this episode, we're diving into the strange and fascinating world of atomic orbitals. We'll explain why electrons don't follow neat, predictable paths and instead inhabit "probability clouds." You'll learn the unique shapes of the four main types of orbitals—s, p, d, and f—and how they determine an atom's chemistry. Tune in to understand the true nature of

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00:10:46

Topic: Atomic Trends

CHEMDUNN ·

2025/08/21

This episode dives into the predictable patterns of the periodic table, or "atomic trends," that help us understand how elements behave. It explains how properties like atomic radius (the size of an atom), electronegativity (its attraction for electrons), and ionization energy (the energy required to remove an electron) change as you move across a period or down a group. By breaking down these fundamental concepts, the episode provides listeners with the tools to predict an element's

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116 results

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