Chemistry videos

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Chemistry videos

Post by Algerien1970 on Mon 8 Jun - 22:28



[size=20]Introduction to the atom[/size]






  • Elements and atoms(Video)




  • Introduction to the atom(Video)




  • Atomic number, mass number, and isotopes(Video)




  • Atomic weight and atomic mass(Video)




  • Atomic mass(Video)




  • The mole and Avogadro's number





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Re: Chemistry videos

Post by Algerien1970 on Mon 8 Jun - 22:31



[size=20]Balancing chemical equations[/size]


We are now going to look at chemical reactions. But as we do, we need to make sure that atoms aren't magically appearing or disappearing. Put another way, we need to sure that we have the same number of each constituent atom in the product of the reaction as we do in the reactants (the molecules that react)!





  • Balancing chemical equations(Video)




  • Balancing more complex chemical equation(Video)




  • Visually understanding balancing chemical equations(Video)




  • Balancing another combustion reaction(Video)




  • Balancing chemical equation with substitution(Video)




  • Balancing chemical equations 1(Exercise)




  • Balancing Chemical Equations Intuition



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Re: Chemistry videos

Post by Algerien1970 on Mon 8 Jun - 22:32

[size=20]Bohr's model of the hydrogen atom

Atomic theory is not Bohr-ing! While it doesn't work for atoms with more than one electron, the Bohr model successfully predicts the emission spectrum of hydrogen.[/size]




  • Photoelectric effect(Video)




  • Bohr model radii (derivation using physics)(Video)




  • Bohr model radii(Video)




  • Bohr model energy levels (derivation using physics)(Video)




  • Bohr model energy levels(Video)




  • Absorption and emission(Video)




  • Emission spectrum of hydrogen

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Re: Chemistry videos

Post by Algerien1970 on Mon 8 Jun - 22:33

[size=20]Introduction to the periodic table

A little more than a century ago, the chemist Dmitri Mendeleev published an early form of the periodic table, which organizes the known elements of our world. His method of classifying the elements was so useful that we still use it even today. We will learn to apply this elegant table to an understanding of atoms and molecules in this tutorial. Hydrogen, helium, lithium, beryllium, boron, carbon…[/size]




  • Valence electrons(Video)




  • Groups of the periodic table(Video)




  • The periodic table - classification of elements(Video)




  • The periodic table - transition metals(Video)




  • The periodic table - valence electrons




    [size=20][size=20]Periodic table trends

    [/size]

    [/size]




    • Atomic radius trends on periodic table(Video)




    • Mini-video on ion size(Video)




    • Atomic and ionic radii(Video)




    • Ionization energy trends(Video)




    • Group trend for ionization energy(Video)




    • Period trend for ionization energy(Video)




    • First and second ionization energy(Video)




    • Electron affinity(Video)




    • Period trend for electron affinity(Video)




    • Electronegativity



    [size]
    [/size]
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Re: Chemistry videos

Post by Algerien1970 on Mon 8 Jun - 22:35

[size=20]Types of chemical bonds

In this tutorial, we will learn about electronegativity and the different types of chemical bonds.[/size]




  • Ionic, covalent, and metallic bonds(Video)




  • Electronegativity(Video)




  • Electronegativity and bonding(Video)




  • Metallic nature



    [size=20][size=20]Dot structures

    We can’t always see molecules, but we can always simplify and draw depictions of them with simply pen and paper. It is the language of chemistry that we want you to get acquainted with. You will learn to draw Lewis dot structures and resonance structures, assign formal charges, and analyze the geometry of molecules and ions.[/size]

    [/size]




    • Drawing dot structures(Video)




    • Formal charge and dot structures(Video)




    • Resonance and dot structures(Video)




    • VSEPR for 2 electron clouds(Video)




    • VSEPR for 3 electron clouds(Video)




    • More on the dot structure for sulfur dioxide(Video)




    • VSEPR for 4 electron clouds(Video)




    • VSEPR for 5 electron clouds(Video)




    • VSEPR for 5 electron clouds (continued)(Video)




    • VSEPR for 6 electron clouds



    [size]
    [/size]
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Re: Chemistry videos

Post by Algerien1970 on Mon 8 Jun - 22:36

[size=20]Ideal gas equation

In this tutorial, Sal shows you how to use the ideal gas equation in calculations.[/size]




  • Ideal gas equation: PV = nRT(Video)




  • Deflate gate(Video)




  • Ideal gas equation example 1(Video)




  • Ideal gas equation example 2(Video)




  • Ideal gas equation example 3(Video)




  • Ideal gas equation example 4(Video)




  • Partial pressure(Video)




  • Vapor pressure example

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Re: Chemistry videos

Post by Algerien1970 on Mon 8 Jun - 22:37

[size=20]States of matter

[/size]




  • States of matter(Video)




  • States of matter follow-up(Video)




  • Specific heat, heat of fusion and vaporization(Video)




  • Chilling water problem(Video)




  • Phase diagrams(Video)




  • Van der waals forces(Video)




  • Covalent networks, metallic, and ionic crystals(Video)




  • Vapor pressure(Video)




  • Suspensions, colloids and solutions(Video)




  • Solubility(Video)




  • Boiling point elevation and freezing point depression(Video)




  • Change of state example

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Re: Chemistry videos

Post by Algerien1970 on Mon 8 Jun - 22:38

[size=20]Equilibrium constant

In this tutorial, we will examine the equilibrium state and learn how to write the expression for the equilibrium constant.[/size]




  • Reactions in equilibrium(Video)




  • Keq intuition (mathy and not necessary to progress)(Video)




  • Keq derivation intuition (can skip; bit mathy)(Video)




  • Heterogeneous equilibrium

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Re: Chemistry videos

Post by Algerien1970 on Mon 8 Jun - 22:39

[size=20][size=20]Factors that affect chemical equilibrium

In this tutorial, we will learn about the different factors that affect a reaction mixture at equilibrium.[/size]
[/size]



  • Le Chatelier's principle(Video)



[size=20][size=20]Spectrophotometry

In the lab, it is useful to know how much of something you have or the concentration of a solute. In this tutorial, we'll light to do that![/size]
[/size]




  • Spectrophotometry introduction(Video)




  • Spectrophotometry example

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Re: Chemistry videos

Post by Algerien1970 on Mon 8 Jun - 22:43

[size=20][size=20]Acids, bases, and pH

[/size]
[/size]




  • Acid base introduction(Video)




  • Acid-base definitions(Video)




  • Ka and acid strength(Video)




  • Autoionization of water(Video)




  • Definition of pH(Video)




  • pH, pOH of strong acids and bases(Video)




  • Strong acids and strong bases(Video)



[size=20][size=20]Acid-base equilibria

In this tutorial, we will learn how to calculate the pH of weak acids and bases.[/size]
[/size]




  • pH of a weak acid(Video)




  • pH of a weak base(Video)




  • Conjugate acids and bases(Video)




  • pKa and pKb relationship(Video)




  • Weak acid equilibrium(Video)




  • Weak base equilibrium(Video)




  • Relationship between Ka and Kb(Video)




  • Acid-base properties of salts(Video)




  • pH of salt solutions


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Re: Chemistry videos

Post by Algerien1970 on Mon 8 Jun - 22:43

[size=20][size=20]Buffer solutions

Buffer solutions play an important role in many chemical and biological processes. In this tutorial, we will learn how buffers resist changes in pH.[/size]
[/size]




  • Buffers and Hendersen-Hasselbalch(Video)




  • Common ion effect(Video)




  • Buffer solutions(Video)




  • Buffer solution calculations(Video)



[size=20][size=20]Titrations

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[/size]




  • Titration introduction(Video)




  • Titration calculation example(Video)




  • Strong acid titration(Video)




  • Titration of a strong acid with a strong base(Video)




  • Titration of a strong acid with a strong base (continued)(Video)




  • Weak acid titration(Video)




  • Titration of a weak acid with a strong base(Video)




  • Titration of a weak acid with a strong base (continued)(Video)




  • Titration of a weak base with a strong acid(Video)




  • Titration of a weak base with a strong acid (continued)(Video)




  • Titration curves and acid-base indicators(Video)




  • Titration roundup(Video)




  • Acid base titration(Video)




  • Redox titration(Video)



[size=20][size=20]Solubility equilibria

[/size]
[/size]




  • Common polyatomic ions(Video)




  • Dissolution and precipitation(Video)




  • Solubility product constant from the solubility(Video)




  • Solubility from the solubility product constant(Video)




  • Solubility and the common-ion effect(Video)




  • Solubility and the pH of the solution(Video)




  • Solubility and complex ion formation(Video)

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Re: Chemistry videos

Post by Algerien1970 on Mon 8 Jun - 22:44

[size=20][size=20]Internal energy

An introduction to the first law of thermodynamics, internal energy, heat, work, and PV diagrams[/size]
[/size]




  • Macrostates and microstates(Video)




  • Quasistatic and reversible processes(Video)




  • First law of thermodynamics / internal energy(Video)




  • More on internal energy(Video)




  • Work from expansion(Video)




  • Pv-diagrams and expansion work(Video)



[size=20][size=20]Enthalpy

An introduction to enthalpy and Hess's law[/size]
[/size]




  • Enthalpy(Video)




  • Heat of formation(Video)




  • Hess's law and reaction enthalpy change(Video)




  • Hess's law example(Video)



[size=20][size=20]Entropy

An introduction to the Carnot cycle and entropy[/size]
[/size]




  • Work done by isothermic process(Video)




  • Carnot cycle and Carnot engine(Video)




  • Proof: Volume ratios in a carnot cycle(Video)




  • Proof: S (or entropy) is a valid state variable(Video)




  • Thermodynamic entropy definition clarification(Video)




  • Reconciling thermodynamic and state definitions of entropy(Video)




  • Entropy intuition(Video)




  • Maxwell's demon(Video)




  • More on entropy(Video)



[size=20][size=20]Gibbs free energy

An introduction to Gibbs free energy and how free energy relates to spontaneity and the equilibrium constant[/size]
[/size]




  • Gibbs free energy and spontaneity(Video)




  • Gibbs free energy example(Video)




  • More rigorous Gibbs free energy / spontaneity relationship(Video)




  • A look at a seductive but wrong Gibbs/spontaneity proof(Video)




  • Changes in free energy and the reaction quotient(Video)




  • Standard change in free energy and the equilibrium constant



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Re: Chemistry videos

Post by Algerien1970 on Mon 8 Jun - 22:45

[size=20][size=20]Oxidation-reduction reactions

Oxidation and reduction are powerful ideas for thinking about how charge is transferred within a reaction. As we'll see, it is something of a hypothetical, but it is, nonetheless, very useful.[/size]
[/size]




  • Oxidation and reduction(Video)




  • Oxidation state trends in periodic table(Video)




  • Practice determining oxidation states(Video)




  • Unusual oxygen oxidation states(Video)




  • Oxidation reduction or redox reactions(Video)




  • Redox reaction with iron(Video)




  • Oxidizing and reducing agents(Video)




  • Disproportionation(Video)




  • Balancing redox reactions in acid(Video)




  • Balancing redox reactions in base(Video)



[size=20][size=20]Galvanic cells

Batteries power much of our lives (literally). In this tutorial, we'll use our knowledge of oxidation and reduction to understand how Galvanic/Voltaic cells actually work.[/size]
[/size]




  • Redox reaction from dissolving zinc in copper sulfate(Video)




  • Galvanic cell voltaic cell(Video)




  • Electrodes and voltage of Galvanic cell(Video)




  • Shorthand notation for galvanic/voltaic cells(Video)




  • Galvanic cells and changes in free energy(Video)



[size=20][size=20]Cell potentials

An introduction to calculating cell potentials[/size]
[/size]




  • Free energy and cell potential(Video)




  • Standard reduction potentials(Video)




  • Voltage as an intensive property(Video)




  • Using reduction potentials(Video)




  • Spontaneity and redox reactions(Video)




  • Standard cell potential and the equilibrium constant(Video)




  • Calculating the equilibrium constant from the standard cell potential(Video)




  • Nernst equation(Video)




  • Using the Nernst equation(Video)




  • Concentration cell(Video)



[size=20][size=20]Electrolytic cells and batteries

An introduction to electrolytic cells and different types of batteries[/size]
[/size]




  • Introduction to electrolysis(Video)




  • Quantitative electrolysis(Video)




  • Electrolysis of molten sodium chloride(Video)




  • Lead storage battery(Video)




  • Nickel-cadmium battery


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Re: Chemistry videos

Post by Algerien1970 on Mon 8 Jun - 22:46

[size=20][size=20]Reaction rates and rate laws

In this tutorial, we will examine the rates of chemical reactions and learn how to write rate laws.[/size]
[/size]




  • Introduction to kinetics(Video)




  • Rate of reaction(Video)




  • Rate law and reaction order(Video)




  • Experimental determination of rate laws(Video)



[size=20][size=20]Relationship between reaction concentrations and time

In this tutorial, we will convert rate laws into equations that allow us to determine the concentrations of reactants at any time during the course of a reaction.[/size]
[/size]




  • First-order reaction (with calculus)(Video)




  • Plotting data for a first-order reaction(Video)




  • Half-life of a first-order reaction(Video)




  • First-order reaction example(Video)




  • Second-order reaction (with calculus)(Video)




  • Plotting data for a second-order reaction(Video)




  • Half-life of a second-order reaction(Video)




  • Second-order reaction example(Video)




  • Zero-order reaction (with calculus)(Video)



[size=20][size=20]Arrhenius equation and reaction mechanisms

In this tutorial, we will learn about reaction mechanisms and how temperature and the activation energy affect the rate of a reaction.[/size]
[/size]




  • Collision theory(Video)




  • Arrhenius equation(Video)




  • Forms of the Arrhenius equation(Video)




  • Using the Arrhenius equation(Video)




  • Elementary rate laws(Video)




  • Mechanisms and the rate-determining step(Video)




  • Catalysts

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Re: Chemistry videos

Post by Algerien1970 on Mon 8 Jun - 22:47

[size=20]Radioactive decay

[/size]




  • Mass defect and binding energy(Video)




  • Nuclear stability and nuclear equations(Video)




  • Types of decay(Video)




  • Alpha, beta, and gamma decay(Video)




  • Half-life(Video)




  • Half-life plot(Video)




  • Exponential decay formula proof (can skip, involves calculus)(Video)




  • Introduction to exponential decay(Video)




  • More exponential decay examples(Video)




  • Exponential decay and semi-log plots

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