AP Chemistry with Chemguy
Video Lectures
Displaying all 35 video lectures.
I. Atomic Theory | |
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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. |
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Atomic Theory II: Bohr Model In this video lecture, Chemguy explains energy levels; Bohr calculation for energy of electron. |
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Atomic Theory III: Heisenberg Uncertainty Principle In this video lecture, Chemguy explains the Heisenberg Uncertainty Principle. |
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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. |
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Atomic Theory V: Example of Quantum Numbers In this video lecture, Chemguy finishes his lesson on quantum number lesson. |
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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. |
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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 | |
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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. |
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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. |
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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. |
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Bonding IV: Octahedral and Square Planar In this video lecture, Chemguy gives all the shapes for 6 effective pairs: octahedral and square planar shape. |
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Bonding V: Molecular Orbitals In this video lecture, Chemguy teaches molecular orbitals. Topics include pi-bonds, sigma-bonds and hybridization. |
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Bonding VI: Orbital Hybridization In this video lecture, Chemguy teaches bond hybridization. |
III. Stoichiometry | |
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Stoichiometry I: Molar Mass & Mass Percent Calculation In this video lecture, Chemguy teaches the atomic weight (molar mass) calculation and mass percent. |
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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. |
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Stoichiometry III: Water of Hydration Calculation In this video lecture, Chemguy calculates the water of hydration (crystallization) of an ionic compound. |
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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. |
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Solutions II: Finding Mass %, Mole Fraction & Molality In this video lecture, Chemguy teaches molarity, mass percent and mole fraction. |
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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. |
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Solution IV: Raoult's Law Chemguy goes over pressure fraction and Raoult's Law. |
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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. |
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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 | |
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Gases I: Kinetic Molecular Theory In this video lecture, Chemguy reviews root mean square velocity and kinetic molecular theory. |
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Gases II: Graham's Law of Effusion In this video lecture, Chemguy teaches Graham's Law of Effusion. |
V. Kinetics | |
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Kinetics I: Rate Laws In this video lecture, Chemguy introduces rates of reaction; rate laws. |
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Kinetics II: Determining Rate Law of Reaction In this video lecture, Chemguy introduces the initial rate method for determining reactant order. |
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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. |
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Kinetics IV: Graphing Integrated Rate Law Data In this video lecture, Chemguy graphs integrated rate law data. |
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Kinetics V: Reaction Mechanisms In this video lecture, Chemguy goes over reaction mechanisms. |
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Kinetics VI: Activation Energy In this video lecture, Chemguy finishes reaction mechanisms and introduces activation energy calculations. |
VI. Thermodynamics | |
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Thermodynamics I: Entropy In this video lecture, Chemguy talks about entropy and what spontaneous reactions have in common. |
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Thermodynamics II: Spontaneous Reaction In this video lecture, Chemguy discusses spontaneity, system, surrounding and change in entropy of the universe. |
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Thermodynamics III: Gibbs Free Energy In this video lecture, Chemguy introduces and calculates Gibbs free energy. |
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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. |
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Thermodynamics V: Nernst Equation In this video lecture, Chemguy shows the relationship between free energy and the equilibrium constant; Nernst equation. |