Chemistry videos

by **Algerien1970** Mon 8 Jun - 22:28

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The mole and Avogadro's number

by **Algerien1970** Mon 8 Jun - 22:31

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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)!

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by **Algerien1970** Mon 8 Jun - 22:32

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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]

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by **Algerien1970** Mon 8 Jun - 22:33

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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]

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The periodic table - valence electrons
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  Electronegativity
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by **Algerien1970** Mon 8 Jun - 22:35

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

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Metallic nature
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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]
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  VSEPR for 6 electron clouds
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by **Algerien1970** Mon 8 Jun - 22:36

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

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by **Algerien1970** Mon 8 Jun - 22:37

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by **Algerien1970** Mon 8 Jun - 22:38

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

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by **Algerien1970** Mon 8 Jun - 22:39

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In this tutorial, we will learn about the different factors that affect a reaction mixture at equilibrium.[/size]
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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]
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by **Algerien1970** Mon 8 Jun - 22:43

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

by **Algerien1970** Mon 8 Jun - 22:43

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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]
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by **Algerien1970** Mon 8 Jun - 22:44

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An introduction to the first law of thermodynamics, internal energy, heat, work, and PV diagrams[/size]
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An introduction to enthalpy and Hess's law[/size]
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An introduction to the Carnot cycle and entropy[/size]
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An introduction to Gibbs free energy and how free energy relates to spontaneity and the equilibrium constant[/size]
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Standard change in free energy and the equilibrium constant

by **Algerien1970** Mon 8 Jun - 22:45

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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]
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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]
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An introduction to calculating cell potentials[/size]
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An introduction to electrolytic cells and different types of batteries[/size]
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Nickel-cadmium battery

by **Algerien1970** Mon 8 Jun - 22:46

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In this tutorial, we will examine the rates of chemical reactions and learn how to write rate laws.[/size]
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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]
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In this tutorial, we will learn about reaction mechanisms and how temperature and the activation energy affect the rate of a reaction.[/size]
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by **Algerien1970** Mon 8 Jun - 22:47

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