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Learn Chemistry Fast
(from someone who can actually explain it)
Chris is a Stanford-educated tutor with over 10 years experience tutoring Chemistry to students of all abilities, from students struggling to get from a C to a B, to go-getters trying to move an A- up to an A, to struggling students just hoping to pass. In that time he got a lot of experience learning how to explain this stuff in a way it actually makes sense to normal people. Through his videos he has helped countless students, and he can do the same for you.
This chapter covers the basics of scientific notation, both converting it to regular numbers and back again. Decimals, huge numbers, multiplying scientific notation numbers together, positive exponents, negative exponents, "base 10", etc. it's all covered.
These videos are an intro to chemistry. First we'll explain what the heck atoms, molecules and compounds are, then we'll explain how temperature makes a bunch of molecules decide to go from being a solid, to liquid, to gas.
This chapter shows you what everything on the periodic table means, including the families such as Alkalai Metals, Alkaline Earth Metals, Halogens, Transition Metals, and Noble Gases. It also explains how to tell which ions atoms form.
This chapter covers everything about why particular elements and compounds form solids, liquids, or gases, from the forces that make them want to "stick together" to the kinetic heat/rattling which makes them want to break apart.
Also covered: parts per million (ppm), parts per billion (ppb), mass ratio (wt/wt), mole ratio (X), mass percent, and those dilution problems where you have to calculate the concentration of a solution after it's been combined with another.
This chapter introduces equilibrium and explains how it applies to a couple common situations everyone is familiar with: dissolving sugar in water, and water evaporating to its vapor pressure in a closed container. The rest of the videos explain common questions involving Le Chatalier's Principle with respect to concentration, pressure and temperature.
ICE tables (initial, change, equilibrium) allow us to use a bit of algebra to determine the concentrations at equilibrium when we aren't given the equilibrium constant. Solubility products allow us to calculate the solubility of compounds which would have been considered "insoluble" in the solubility rules chapter.
This chapter covers everything about reaction rates. An introductory video covers the factors you'll need to know for multiple choice and essay questions, then three more videos explain the three ways you'll need to be able to calculate reaction rate: graphs, stoichiometry, and rate laws.
Neutralization refers to a reaction where acid and base cancel each other out, usually by forming water. Titration refers to performing a neutralization experiment in the laboratory under controlled conditions, and calculating stuff based on the outcome.
This chapter covers what redox and oxidation numbers are, and it shows you how to calculate the oxidation numbers for each atom on a compound. Also covered are oxidation numbers of monoatomic and polyatomic ions.
If you do not have an account, you should get one, because it is awesome! You can save a playlist for each test or each chapter, and save your "greatest hits" into a "watch right before the final" list (not that we recommend cramming, but when in Rome...)