AP Chemistry with Chemguy
Video Lectures
Displaying all 35 video lectures.
I. Atomic Theory | |
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Lecture 1 Play Video |
Atomic Theory I: Energy and Waves In this video lecture, Chemguy begins with energy, waves, and Planck's constant. He explains the universal wave equation, Planck's equation for the energy of a wave and Eistein's most famous equation: the mass-energy equivalence formula. |
Lecture 2 Play Video |
Atomic Theory II: Bohr Model In this video lecture, Chemguy explains energy levels; Bohr calculation for energy of electron. |
Lecture 3 Play Video |
Atomic Theory III: Heisenberg Uncertainty Principle In this video lecture, Chemguy explains the Heisenberg Uncertainty Principle. |
Lecture 4 Play Video |
Atomic Theory IV: Pauli Exclusion Principle In this video lecture, Chemguy teaches quantum numbers and Pauli's exclusion principle. There are 4 quantum numbers: n (Principle Quantum Number), l (Angular Momentum Quantum Number), ml (Magnetic Quantum Number) and ms (Spin Quantum Number) Pauli's exclusion principles states that no two electrons in an atom can have the same set of quantum numbers. |
Lecture 5 Play Video |
Atomic Theory V: Example of Quantum Numbers In this video lecture, Chemguy finishes his lesson on quantum number lesson. |
Lecture 6 Play Video |
Atomic Theory VI: Electron Configurations & Aufbau Principle In this video lecture, Chemguy explains how to find the electron configurations on elements and the Aufbau principle. He also discusses how the different orbitals can be found in the periodic table. |
Lecture 7 Play Video |
Atomic Theory VII: Periodic Trends In this video lecture, Chemguy finishes electron configurations and takes up periodic table trends. He covers essential periodic table trends, such as Ionization Energy, Electron Affinity, Electronegativity and Atomic Radius. - First Ionization Energy: the energy required to take away the outermost electron. As you go from left to right on the periodic table, the first ionization energy increases. As you go from top to bottom, the first ionization energy decreases. - Electron Affinity: is the energy associated with the acquiring of an electron by a gaseous element. "How favorable is it to bring in an electron?" Electron affinity increases from going left to right on the periodic table. - Atomic radius decreases across a row in the periodic table and increases from top to bottom in a column. |
II. Bonding | |
Lecture 8 Play Video |
Bonding I: Lattice Energy In this video lecture, Chemguy teaches the step-wise formation of an ionic compound and the lattice energy of molecules. He also mentions Coulomb's Law briefly near the end of the lecture. |
Lecture 9 Play Video |
Bonding II: Formal Charge & Resonance In this video lecture, Chemguy instructs on formal charge calculation and resonance. Some definitions discussed in this lesson: - Format Change = Free atom valence - Assigned valence. - All formal charges in molecule must total the overall charge. - The more electronegative element, like oxygen, must have the lower formal charge. |
Lecture 10 Play Video |
Bonding III: Trigonal Bipyramidal, Seesaw and T-Shape In this video lecture, Chemguy gives the shapes for 5 effective pair: trigonal bipyramidal, seesaw shape and T-shape. When there are no lone pairs, the trigonal bipyramidal shape is found. One lone electron pair makes a seesaw shape and a T-shape when there are two lone electron pairs. |
Lecture 11 Play Video |
Bonding IV: Octahedral and Square Planar In this video lecture, Chemguy gives all the shapes for 6 effective pairs: octahedral and square planar shape. |
Lecture 12 Play Video |
Bonding V: Molecular Orbitals In this video lecture, Chemguy teaches molecular orbitals. Topics include pi-bonds, sigma-bonds and hybridization. |
Lecture 13 Play Video |
Bonding VI: Orbital Hybridization In this video lecture, Chemguy teaches bond hybridization. |
III. Stoichiometry | |
Lecture 14 Play Video |
Stoichiometry I: Molar Mass & Mass Percent Calculation In this video lecture, Chemguy teaches the atomic weight (molar mass) calculation and mass percent. |
Lecture 15 Play Video |
Stoichiometry II: Percent Composition by Mass & Empirical Formula In this video lecture, Chemguy does a question that converts % composition by mass into an empirical formula. |
Lecture 16 Play Video |
Stoichiometry III: Water of Hydration Calculation In this video lecture, Chemguy calculates the water of hydration (crystallization) of an ionic compound. |
Lecture 17 Play Video |
Stoichiometry III/ Solutions I: Determining Empirical Formula & Advanced Solutions In this video lecture, Chemguy finishes the combustion analysis question to obtain the empirical formula of the compound. He also introduces advanced solution calculations involving mass percent, molality and mole fraction. |
Lecture 18 Play Video |
Solutions II: Finding Mass %, Mole Fraction & Molality In this video lecture, Chemguy teaches molarity, mass percent and mole fraction. |
Lecture 19 Play Video |
Solutions III: Tyndal Effect, Boiling Point and Freezing Point In this video lecture, Chemguy teaches about colloids, colligative properties, Tyndal effect, boiling point elevation and freezing point depression. |
Lecture 20 Play Video |
Solution IV: Raoult's Law Chemguy goes over pressure fraction and Raoult's Law. |
Lecture 21 Play Video |
Solubility Product I: Molar Solubility & Ksp In this video lecture, Chemguy describes molar solubility and Ksp. Topics include: equilibrium, equilibrium product constant and ICE tables. |
Lecture 22 Play Video |
Solubility Product II: Relative Solubility In this video lecture, Chemguy teaches relative solubility and goes over a real tough complex ion formation problem. |
IV. Gases | |
Lecture 23 Play Video |
Gases I: Kinetic Molecular Theory In this video lecture, Chemguy reviews root mean square velocity and kinetic molecular theory. |
Lecture 24 Play Video |
Gases II: Graham's Law of Effusion In this video lecture, Chemguy teaches Graham's Law of Effusion. |
V. Kinetics | |
Lecture 25 Play Video |
Kinetics I: Rate Laws In this video lecture, Chemguy introduces rates of reaction; rate laws. |
Lecture 26 Play Video |
Kinetics II: Determining Rate Law of Reaction In this video lecture, Chemguy introduces the initial rate method for determining reactant order. |
Lecture 27 Play Video |
Kinetics III: Integrated Rate Law in 0th, 1st and 2nd Order In this video lecture, Chemguy takes you through the integrated rate law method; zero, first and second order. |
Lecture 28 Play Video |
Kinetics IV: Graphing Integrated Rate Law Data In this video lecture, Chemguy graphs integrated rate law data. |
Lecture 29 Play Video |
Kinetics V: Reaction Mechanisms In this video lecture, Chemguy goes over reaction mechanisms. |
Lecture 30 Play Video |
Kinetics VI: Activation Energy In this video lecture, Chemguy finishes reaction mechanisms and introduces activation energy calculations. |
VI. Thermodynamics | |
Lecture 31 Play Video |
Thermodynamics I: Entropy In this video lecture, Chemguy talks about entropy and what spontaneous reactions have in common. |
Lecture 32 Play Video |
Thermodynamics II: Spontaneous Reaction In this video lecture, Chemguy discusses spontaneity, system, surrounding and change in entropy of the universe. |
Lecture 33 Play Video |
Thermodynamics III: Gibbs Free Energy In this video lecture, Chemguy introduces and calculates Gibbs free energy. |
Lecture 34 Play Video |
Thermodynamics IV: Free Energy Calculations In this video lecture, Chemguy teaches more free energy calculations and the Hess' Law form of the calculation of delta G: delta G(Products) - delta G (Reactants) = delta G. |
Lecture 35 Play Video |
Thermodynamics V: Nernst Equation In this video lecture, Chemguy shows the relationship between free energy and the equilibrium constant; Nernst equation. |