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Khan Academy - Chemistry 1-48

Introduction to chemistry
Introduction to chemistryA big picture intro to chemistry and why it is fascinating.Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity.…
- 20 Jul 16, 12:07am -
Conjugate acid-base pairs | Acids and bases | Chemistry | Khan Academy
Conjugate acid-base pairs | Acids and bases | Chemistry | Khan AcademyIntroduction to conjugate acid-base pairs. Definition and examples of conjugate acid-base pairs. Chemistry on Khan Academy: Did you know that everything is made out of chemic…
- 24 Jun 16, 7:45pm -
Le Chatelier's principle: Worked example | Chemical equilibrium | Chemistry | Khan Academy
Le Chatelier's principle: Worked example | Chemical equilibrium | Chemistry | Khan AcademyA worked example using Le Chatelier's principle to predict how concentrations will shift for different perturbations. Example includes changes in reaction v…
- 13 Jun 16, 5:33pm -
Introduction to reaction quotient Qc | Chemical equilibrium | Chemistry | Khan Academy
Introduction to reaction quotient Qc | Chemical equilibrium | Chemistry | Khan AcademyIntroduction to the reaction quotient Qc, and how to use the reaction quotient to predict how the reaction concentrations will change. Chemistry on Khan Acade…
- 31 May 16, 5:45pm -
Bond enthalpy and enthalpy of reaction | Chemistry | Khan Academy
Bond enthalpy and enthalpy of reaction | Chemistry | Khan AcademyIntroduction to bond enthalpy, and how to use bond enthalpies to calculate enthalpy of reaction. Watch the next lesson: https://www.khanacademy.org/science/chemistry/thermodynamic…
- 26 May 16, 5:41pm -
Ionic bonds and Coulombs law
Ionic bonds and Coulombs lawIntroduction to how the strength of ionic bonds is related to Coulomb's law. Example of using Coulomb's law to explain differences in melting points of ionic compounds.From:Khan AcademyViews:70817 108ratings…
- 24 May 16, 9:39pm -
Calculating internal energy and work example | Chemistry | Khan Academy
Calculating internal energy and work example | Chemistry | Khan AcademyWorked example calculating the change in internal energy for a gas using the first law of thermodynamics.Watch the next lesson: https://www.khanacademy.org/science/chemistry…
- 24 May 16, 9:11pm -
Finding units of rate constant k | Knetics | Chemistry | Khan Academy
Finding units of rate constant k | Knetics | Chemistry | Khan AcademyHow to find the units for the rate constant k for a zero, first, or second order reaction. Watch the next lesson: https://www.khanacademy.org/science/chemistry/chem-kinetics/r…
- 16 May 16, 10:35pm -
Comparing Q vs K example | Chemical equilibrium | Chemistry | Khan Academy
Comparing Q vs K example | Chemical equilibrium | Chemistry | Khan AcademyA worked example using reaction quotient Q to predict how concentrations will shift so the reaction can get to equilibrium. Watch the next lesson: https://www.khanacademy…
- 16 May 16, 10:09pm -
Ways to get a buffer solution | Chemistry | Khan Academy
Ways to get a buffer solution | Chemistry | Khan AcademyDescribes the two main situations where you get a buffer: making a buffer for a specific pH by combining a weak acid and a salt containing the conjugate base, and using a neutralization reac…
- 16 May 16, 8:29pm -
Rate constant k from half-life example | Knetics | Chemistry | Khan Academy
Rate constant k from half-life example | Knetics | Chemistry | Khan AcademyExample problem showing how to find the rate constant k from the half-life of a first order reaction.Watch the next lesson: https://www.khanacademy.org/science/chemistry…
- 12 May 16, 10:27pm -
Introduction to partial pressure | Gases and kinetic molecular theory | Chemistry | Khan Academy
Introduction to partial pressure | Gases and kinetic molecular theory | Chemistry | Khan AcademyDefinition of partial pressure and Dalton's law of partial pressure. Example of calculating partial pressure of a gas in a mixture from the total pres…
- 4 May 16, 7:34pm -
AP Chemistry multiple choice sample: Boiling points
AP Chemistry multiple choice sample: Boiling pointsComparing the boiling point of nonane and 2,3,4-trifluoropentane. A sample multiple choice problem from the 2014 AP course description.From:Khan AcademyViews:17763 35ratingsTime:06:19…
- 28 Apr 16, 11:29pm -
2015 AP chemistry free response 5a
2015 AP chemistry free response 5aFinding the order of reaction for kinetics of bleaching food coloring. An alternative method of solving 2015 AP Chemistry free response 5a.From:Khan AcademyViews:5078 12ratingsTime:06:52More inEduca…
- 28 Apr 16, 11:10pm -
pH and pKa relationship for buffers | Chemistry | Khan Academy
pH and pKa relationship for buffers | Chemistry | Khan AcademyHow the Henderson-Hasselbalch equation can be used to look at the ratio of conjugate acid and base using relationship between buffer pH and pKa.Watch the next lesson: https://www.kha…
- 15 Mar 16, 3:24am -
Small x approximation for large Kc | Chemical equilibrium | Chemistry | Khan Academy
Small x approximation for large Kc | Chemical equilibrium | Chemistry | Khan AcademyGuidelines and worked examples for using the small x approximation to solve equilibrium problems with large Kc values.Watch the next lesson: https://www.khanaca…
- 15 Mar 16, 3:05am -
Small x approximation for small Kc | Chemistry | Khan Academy
Small x approximation for small Kc | Chemistry | Khan AcademyWhen the small x approximation is useful for solving equilibrium problems, and an example using the small x approximation when Kc is small.Watch the next lesson: https://www.khanacade…
- 15 Mar 16, 2:59am -
Buffer capacity | Buffers, titrations, and solubility equilibria | Chemistry | Khan Academy
Buffer capacity | Buffers, titrations, and solubility equilibria | Chemistry | Khan AcademyThe definition of buffer capacity, and an example showing why it depends on the absolute concentrations of the conjugate acid and base.Watch the next les…
- 15 Mar 16, 2:42am -
Noble gas configuration | Electronic structure of atoms | Chemistry | Khan Academy
Noble gas configuration | Electronic structure of atoms | Chemistry | Khan AcademyHow to write electron configurations for atoms and monatomic ions using noble gas configuration.Watch the next lesson: https://www.khanacademy.org/science/chemist…
- 18 Dec 15, 8:34pm -
Noble gas configuration (old, low volume)
Noble gas configuration (old, low volume)How to write electron configurations for atoms and monatomic ions using noble gas configurationChemistry on Khan Academy:Did you know that everything is made out of chemicals? Chemistry is the study of…
- 17 Dec 15, 7:35pm -
Elements and atoms | Atoms, compounds, and ions | Chemistry | Khan Academy
Elements and atoms | Atoms, compounds, and ions | Chemistry | Khan AcademyHow elements relate to atoms. The basics of how protons, electrons and neutrons make up an atom.Watch the next lesson: https://www.khanacademy.org/science/chemistry/atomi…
- 1 Aug 11, 1:58am -
Change of state example | States of matter and intermolecular forces | Chemistry | Khan Academy
Change of state example | States of matter and intermolecular forces | Chemistry | Khan AcademySpecific heat capacity and enthalpy of vaporization example: calculating how much energy it takes to vaporize 1.00 kg of ethanol starting from 20 degre…
- 18 Oct 10, 10:47pm -
Vapor pressure example | Chemistry | Khan Academy
Vapor pressure example | Chemistry | Khan AcademyVapor pressure example using the ideal gas law. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemistry/states-of-matter-and-intermolecular-forces/states-of-matte…
- 18 Oct 10, 5:10pm -
Hess's law example | Thermodynamics | Chemistry | Khan Academy
Hess's law example | Thermodynamics | Chemistry | Khan AcademyHess's law example. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemistry/thermodynamics-chemistry/enthalpy-chemistry-sal/v/bond-enthalpy-and-entha…
- 15 Oct 10, 11:32pm -
Spectrophotometry example | Kinetics | Chemistry | Khan Academy
Spectrophotometry example | Kinetics | Chemistry | Khan AcademySpectrophotometry Example - determining concentration based on absorbance. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemistry/nuclear-chemistry…
- 15 Oct 10, 10:22pm -
Spectrophotometry introduction | Kinetics | Chemistry | Khan Academy
Spectrophotometry introduction | Kinetics | Chemistry | Khan AcademySpectrophotometry, transmittance, absorbance and the Beer-Lambert Law. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemistry/chem-kinetics/sp…
- 15 Oct 10, 9:46pm -
Acid base titration example | Chemistry | Khan Academy
Acid base titration example | Chemistry | Khan AcademyUsing acid-base titration to find mass of oxalic acid, a weak acid. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/titrations/…
- 15 Oct 10, 8:44pm -
Buffers and Henderson-Hasselbalch | Chemistry | Khan Academy
Buffers and Henderson-Hasselbalch | Chemistry | Khan AcademyGetting an intuitive understanding of buffers using le Chatelier's principle. Derivation of the Henderson-Hasselbalch equation. Created by Sal Khan.Watch the next lesson: https://www.k…
- 13 Oct 10, 8:11pm -
Molecular and Empirical Forumlas from Percent Composition
Molecular and Empirical Forumlas from Percent CompositionMolecular and Empirical Forumlas from Percent Composition. Example 2.9 from Kotz Chemistry bookMore free lessons at: http://www.khanacademy.org/video?v=_H009sTvYE0From:Khan AcademyView…
- 17 Aug 10, 3:55pm -
Another Stoichiometry Example in a Solution
Another Stoichiometry Example in a SolutionAnother Stoichiometry Example in a SolutionMore free lessons at: http://www.khanacademy.org/video?v=_qrQKBB2jt8From:Khan AcademyViews:43563 121ratingsTime:09:47More inEducation
- 11 May 10, 8:18pm -
Stoichiometry of a Reaction in Solution
Stoichiometry of a Reaction in SolutionStoichiometry of a Reaction in SolutionMore free lessons at: http://www.khanacademy.org/video?v=EKZSwjVR594From:Khan AcademyViews:127059 391ratingsTime:10:18More inEducation
- 11 May 10, 7:06pm -
Example of Finding Reactant Empirical Formula
Example of Finding Reactant Empirical FormulaExample of Finding Reactant Empirical FormulaMore free lessons at: http://www.khanacademy.org/video?v=66ziUq6vRkoFrom:Khan AcademyViews:29273 58ratingsTime:17:41More inEducation
- 10 May 10, 7:28pm -
Empirical and Molecular Formulas from Stoichiometry
Empirical and Molecular Formulas from StoichiometryEmpirical and Molecular Formulas from StoichiometryMore free lessons at: http://www.khanacademy.org/video?v=FycJ8X67xEUFrom:Khan AcademyViews:69892 186ratingsTime:16:45More inEduca…
- 8 May 10, 5:49am -
Limiting reactant example problem 1 | Chemistry | Khan Academy
Limiting reactant example problem 1 | Chemistry | Khan AcademyA limiting reagent problem to calculate mass of product and mass of excess reactant leftover after reaction. Created by Sal Khan.Practice this yourself on Khan Academy right now: htt…
- 7 May 10, 8:23pm -
Stoichiometry example problem 2 | Chemistry | Khan Academy
Stoichiometry example problem 2 | Chemistry | Khan AcademyCalculating mass of oxygen needed and grams of product formed from the combustion of 25.0 g of glucose. Created by Sal Khan.Practice this yourself on Khan Academy right now: https://www.…
- 7 May 10, 7:27pm -
Stoichiometry example problem 1 | Chemistry | Khan Academy
Stoichiometry example problem 1 | Chemistry | Khan AcademyFiguring out grams of reactants and product produced from reaction of phosphorous and chlorine. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemistry/c…
- 7 May 10, 6:51pm -
A look at a seductive but wrong Gibbs/spontaneity proof | Chemistry | Khan Academy
A look at a seductive but wrong Gibbs/spontaneity proof | Chemistry | Khan AcademyA look at why the "proof" of the relation between changes in Gibbs Free Energy and Spontaneity is wrong in many textbooks. Created by Sal Khan.Watch the next less…
- 29 Sep 09, 12:48am -
Gibbs free energy and spontaneity | Chemistry | Khan Academy
Gibbs free energy and spontaneity | Chemistry | Khan AcademyIntuition behind why spontaneity is driven by enthalpy, entropy and temperature. Introduction to Gibbs free energy. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.o…
- 29 Sep 09, 12:47am -
Gibbs free energy example | Thermodynamics | Chemistry | Khan Academy
Gibbs free energy example | Thermodynamics | Chemistry | Khan AcademyDetermining if a reaction is spontaneous by calculating the change in Gibbs free energy. Also calculates the change in entropy using table of standard entropies. Created by Sal…
- 29 Sep 09, 12:47am -
More rigorous Gibbs free energy / spontaneity relationship | Chemistry | Khan Academy
More rigorous Gibbs free energy / spontaneity relationship | Chemistry | Khan AcademyMore formal understanding of why a negative change in Gibbs Free Energy implies a spontaneous, irreversible reaction. Created by Sal Khan.Watch the next lesson…
- 29 Sep 09, 12:47am -
Hess's law and reaction enthalpy change | Chemistry | Khan Academy
Hess's law and reaction enthalpy change | Chemistry | Khan AcademyUsing Hess's Law and standard heats of formation to determine the enthalpy change for reactions. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/ch…
- 25 Sep 09, 8:33pm -
Heat of formation | Thermodynamics | Chemistry | Khan Academy
Heat of formation | Thermodynamics | Chemistry | Khan AcademyStandard heat of formation or standard enthalpy change of formation. How heats of formation are calculated. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/scie…
- 25 Sep 09, 8:32pm -
Thermodynamic entropy definition clarification | Physics | Khan Academy
Thermodynamic entropy definition clarification | Physics | Khan AcademyClarifying that the thermodynamic definition of Entropy requires a reversible system. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/…
- 25 Sep 09, 4:43pm -
Enthalpy | Thermodynamics | Chemistry | Khan Academy
Enthalpy | Thermodynamics | Chemistry | Khan AcademyUnderstanding why enthalpy can be viewed as "heat content" in a constant pressure system. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemistry/thermodynamic…
- 24 Sep 09, 9:25pm -
Efficiency of a Carnot engine | Thermodynamics | Physics | Khan Academy
Efficiency of a Carnot engine | Thermodynamics | Physics | Khan AcademyDefinition of efficiency for a heat engine. Efficiency of a Carnot Engine. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/thermodynam…
- 22 Sep 09, 6:34pm -
Maxwell's demon | Thermodynamics | Physics | Khan Academy
Maxwell's demon | Thermodynamics | Physics | Khan AcademyMaxwell's Demon: A thought experiment that seems to defy the 2nd Law of Thermodynamics. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/thermodynami…
- 22 Sep 09, 6:34pm -
Carnot efficiency 2: Reversing the cycle | Thermodynamics | Physics | Khan Academy
Carnot efficiency 2: Reversing the cycle | Thermodynamics | Physics | Khan AcademySeeing how we can scale and or reverse a Carnot Engine (to make a refrigerator). Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/ph…
- 22 Sep 09, 6:34pm -
More on entropy | Thermodynamics | Physics | Khan Academy
More on entropy | Thermodynamics | Physics | Khan AcademyDistinguishing between microstates and macro states. How entropy S is defined for a system and not for a specific microstate. Created by Sal Khan.Watch the next lesson: https://www.khanac…
- 22 Sep 09, 6:34pm -

Khan Academy - Chemistry 49-97

Work done by isothermic process | Thermodynamics | Physics | Khan Academy
Work done by isothermic process | Thermodynamics | Physics | Khan AcademyIsothermic and adiabatic processes. Calculating the work done by an isothermic process and seeing that it is the same as the heat added. Created by Sal Khan.Watch the next…
- 22 Sep 09, 6:34pm -
Proof: Volume ratios in a carnot cycle | Thermodynamics | Physics | Khan Academy
Proof: Volume ratios in a carnot cycle | Thermodynamics | Physics | Khan AcademyProof of the volume ratios in a Carnot cycle. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/thermodynamics/laws-of-thermody…
- 22 Sep 09, 6:34pm -
Reconciling thermodynamic and state definitions of entropy | Physics | Khan Academy
Reconciling thermodynamic and state definitions of entropy | Physics | Khan AcademyLong video explaining why entropy is a measure of the number of states a system can take on (mathy, but mind-blowing). Created by Sal Khan.Watch the next lesson:…
- 22 Sep 09, 6:34pm -
Proof: S (or entropy) is a valid state variable | Thermodynamics | Physics | Khan Academy
Proof: S (or entropy) is a valid state variable | Thermodynamics | Physics | Khan AcademyProof that S (or entropy) is a valid state variable. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/thermodynamics/…
- 22 Sep 09, 6:34pm -
Carnot cycle and Carnot engine | Thermodynamics | Physics | Khan Academy
Carnot cycle and Carnot engine | Thermodynamics | Physics | Khan AcademyIntroduction to the Carnot cycle and Carnot heat engine. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/thermodynamics/laws-of-therm…
- 22 Sep 09, 6:34pm -
Proof: U = (3/2)PV or U = (3/2)nRT | Thermodynamics | Physics | Khan Academy
Proof: U = (3/2)PV or U = (3/2)nRT | Thermodynamics | Physics | Khan AcademyConceptual proof that the internal energy of an ideal gas system is 3/2 PV. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/therm…
- 22 Sep 09, 6:34pm -
PV-diagrams and expansion work | Thermodynamics | Physics | Khan Academy
PV-diagrams and expansion work | Thermodynamics | Physics | Khan AcademyWhy work from expansion is the area under the curve of a PV-diagram. Why heat is not a state function and internal energy is a state function. Created by Sal Khan.Watch the…
- 22 Sep 09, 6:34pm -
Work from expansion | Thermodynamics | Physics | Khan Academy
Work from expansion | Thermodynamics | Physics | Khan AcademyHow a system can do work by expanding. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/thermodynamics/laws-of-thermodynamics/v/pv-diagrams-and-e…
- 22 Sep 09, 6:34pm -
Maxwell's demon | Thermodynamics | Physics | Khan Academy
Maxwell's demon | Thermodynamics | Physics | Khan AcademyMaxwell's Demon: A thought experiment that seems to defy the 2nd Law of Thermodynamics. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/thermodynami…
- 22 Sep 09, 6:34pm -
Entropy intuition | Thermodynamics | Physics | Khan Academy
Entropy intuition | Thermodynamics | Physics | Khan AcademyIntroduces second law of thermodynamics. A discussion of entropy change in terms of heat and microstates . Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science…
- 22 Sep 09, 6:34pm -
More on internal energy | Thermodynamics | Physics | Khan Academy
More on internal energy | Thermodynamics | Physics | Khan AcademyGetting more intuition of internal energy, heat, and work. Examples of using the first law to calculate work. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.or…
- 22 Sep 09, 6:31pm -
Macrostates and microstates | Thermodynamics | Physics | Khan Academy
Macrostates and microstates | Thermodynamics | Physics | Khan AcademyThe difference between macrostates and microstates. Thermodynamic equilibrium. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/thermodyn…
- 22 Sep 09, 6:31pm -
Quasistatic and reversible processes | Thermodynamics | Physics | Khan Academy
Quasistatic and reversible processes | Thermodynamics | Physics | Khan AcademyUsing theoretically quasi-static and/or reversible processes to stay pretty much at equilibrium. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.or…
- 22 Sep 09, 6:31pm -
First law of thermodynamics / internal energy | Thermodynamics | Physics | Khan Academy
First law of thermodynamics / internal energy | Thermodynamics | Physics | Khan AcademyFirst law of thermodynamic and internal energy. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/physics/thermodynamics/laws-of…
- 22 Sep 09, 6:31pm -
Exponential decay formula proof (can skip, involves calculus) | Chemistry | Khan Academy
Exponential decay formula proof (can skip, involves calculus) | Chemistry | Khan AcademyShowing that N(t)=Ne^(-kt) describes the amount of a radioactive substance we have at time T. For students with background in Calculus. Not necessary for intr…
- 12 Sep 09, 1:50am -
More exponential decay examples | Nuclear chemistry | Chemistry | Khan Academy
More exponential decay examples | Nuclear chemistry | Chemistry | Khan AcademyA few more examples of exponential decay. Practice calculating k from half-life, and calculating initial mass. Watch the next lesson: https://www.khanacademy.org/scie…
- 12 Sep 09, 1:50am -
Introduction to exponential decay | Nuclear chemistry | Chemistry | Khan Academy
Introduction to exponential decay | Nuclear chemistry | Chemistry | Khan AcademyIntroduction to Exponential Decay. Using the exponential decay formula to calculate k, calculating the mass of carbon-14 remaining after a given time, and calculating…
- 12 Sep 09, 1:50am -
Half-life and carbon dating | Nuclear chemistry | Chemistry | Khan Academy
Half-life and carbon dating | Nuclear chemistry | Chemistry | Khan AcademyCarbon dating is a real-life example of a first-order reaction. This video explains half-life in the context of radioactive decay. Watch the next lesson: https://www.khan…
- 11 Sep 09, 10:04pm -
Types of decay | Nuclear chemistry | Chemistry | Khan Academy
Types of decay | Nuclear chemistry | Chemistry | Khan AcademyAlpha, Beta, Gamma Decay and Positron EmissionWatch the next lesson: https://www.khanacademy.org/science/chemistry/nuclear-chemistry/radioactive-decay/v/alpha-beta-and-gamma-decay?utm…
- 11 Sep 09, 9:20pm -
Hydrogen Peroxide Correction
Hydrogen Peroxide CorrectionCorrecting an error in the last video regarding hydrogen peroxide.From:Khan AcademyViews:66291 120ratingsTime:02:22More inEducation
- 11 Sep 09, 7:44pm -
Galvanic Cells
Galvanic CellsRedox reactions to drive Galvanic Cells.From:Khan AcademyViews:329261 1162ratingsTime:18:26More inEducation
- 11 Sep 09, 7:44pm -
Redox Reactions
Redox ReactionsOxidation reduction (or redox) reactionsFrom:Khan AcademyViews:579886 1989ratingsTime:14:26More inEducation
- 10 Sep 09, 8:37pm -
More on Oxidation States
More on Oxidation StatesMore practice calculating oxidation statesFrom:Khan AcademyViews:160848 366ratingsTime:17:29More inEducation
- 10 Sep 09, 7:06pm -
Introduction to Oxidation States
Introduction to Oxidation StatesOxidation and reduction. Oxidation states.From:Khan AcademyViews:384063 969ratingsTime:17:39More inEducation
- 10 Sep 09, 7:00pm -
Titration roundup | Buffers, titrations, and solubility equilibria | Chemistry | Khan Academy
Titration roundup | Buffers, titrations, and solubility equilibria | Chemistry | Khan AcademyMaking sure you fully understand titration curves by comparing the initial pH and pH at equivalence point for different types. Created by Sal Khan.Watc…
- 9 Sep 09, 10:40pm -
Weak Acid Titration
Weak Acid TitrationEquivalence point when titrating a weak acidMore free lessons at: http://www.khanacademy.org/video?v=gbpc_JBG1F0From:Khan AcademyViews:184065 308ratingsTime:10:24More inEducation
- 9 Sep 09, 10:39pm -
Strong Acid Titration
Strong Acid TitrationStrong acid titration and equivalence pointMore free lessons at: http://www.khanacademy.org/video?v=299o6c-Fkz4From:Khan AcademyViews:236084 314ratingsTime:12:17More inEducation
- 9 Sep 09, 10:39pm -
pKa and pKb relationship | Acids and bases | Chemistry | Khan Academy
pKa and pKb relationship | Acids and bases | Chemistry | Khan AcademyThe Ka and Kb relationship and pKa and pKb relationship between conjugate acids and bases. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemi…
- 9 Sep 09, 6:48pm -
Conjugate acids and bases
Conjugate acids and basesIntroduction to conjugate acids and bases. Created by Sal Khan.Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactiv…
- 9 Sep 09, 6:48pm -
Keq derivation intuition | Chemical equilibrium | Chemistry | Khan Academy
Keq derivation intuition | Chemical equilibrium | Chemistry | Khan AcademyA more concrete attempt at showing how the probabilities of molecules reacting is related to their concentration. Not necessary to keep progressing through chemistry. Creat…
- 8 Sep 09, 4:28pm -
pH of a Weak Base
pH of a Weak BasepH of .2 M of NH3 (weak base).More free lessons at: http://www.khanacademy.org/video?v=gDJtOIxDu78From:Khan AcademyViews:153740 213ratingsTime:13:00More inEducation
- 7 Sep 09, 10:51pm -
pH of a Weak Acid
pH of a Weak AcidCalculating the pH of a weak acidMore free lessons at: http://www.khanacademy.org/video?v=dencuBNp_CkFrom:Khan AcademyViews:312403 521ratingsTime:17:49More inEducation
- 7 Sep 09, 10:49pm -
pH, pOH of strong acids and bases | Chemistry | Khan Academy
pH, pOH of strong acids and bases | Chemistry | Khan AcademyDeriving the relationship between pKw, pH, and pOH. Calculating the pH or pOH of strong acids and bases. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/…
- 7 Sep 09, 8:18pm -
Acid Base Introduction
Acid Base IntroductionArrhenius, Bronsted Lowry, and Lewis Acids and Bases.More free lessons at: http://www.khanacademy.org/video?v=vShCnTY1-T0From:Khan AcademyViews:840485 1385ratingsTime:18:37More inEducation
- 7 Sep 09, 6:47pm -
Introduction to pH, pOH, and pKw
Introduction to pH, pOH, and pKwAutoionization of water into hydronium and hydroxide ions. pH, pOH, and pKa.More free lessons at: http://www.khanacademy.org/video?v=2q4vSKwaBtwFrom:Khan AcademyViews:452962 1308ratingsTime:18:09More…
- 7 Sep 09, 2:20am -
Le Chatelier's principle | Chemical equilibrium | Chemistry | Khan Academy
Le Chatelier's principle | Chemical equilibrium | Chemistry | Khan AcademyHow Le Chatelier's Principle predicts changes in concentration when "stressing" reactions at equilibrium. Created by Sal Khan.Watch the next lesson: https://www.khanacade…
- 5 Sep 09, 3:19am -
Heterogeneous equilibrium | Chemical equilibrium | Chemistry | Khan Academy
Heterogeneous equilibrium | Chemical equilibrium | Chemistry | Khan AcademyIgnoring the solvent or the solid state molecules when calculating the equilibrium constant. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/scien…
- 5 Sep 09, 3:18am -
Keq intuition | Chemical equilibrium | Chemistry | Khan Academy
Keq intuition | Chemical equilibrium | Chemistry | Khan AcademyA probabilistic look at how molecules react to develop the intuition behind the equilibrium constant formula. Not necessary to keep progressing through chemistry. Created by Sal Khan.…
- 5 Sep 09, 3:18am -
Group trend for ionization energy | Periodic table | Chemistry | Khan Academy
Group trend for ionization energy | Periodic table | Chemistry | Khan AcademyExplaining trend in ionization energy down a group using concepts of nuclear charge, electron shielding, and distance of electrons from nucleus. Created by Jay.Watch t…
- 5 Sep 09, 3:18am -
Reactions in equilibrium | Chemical equilibrium | Chemistry | Khan Academy
Reactions in equilibrium | Chemical equilibrium | Chemistry | Khan AcademyEquilibrium reactions and constants. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemistry/chemical-equilibrium/equilibrium-constant/v/…
- 5 Sep 09, 3:18am -
Introduction to kinetics | Energy and enzymes | Biology | Khan Academy
Introduction to kinetics | Energy and enzymes | Biology | Khan AcademyKinetics, activation energy, activated complex and catalysts.Watch the next lesson: https://www.khanacademy.org/science/biology/energy-and-enzymes/introduction-to-enzymes/v/e…
- 5 Sep 09, 3:18am -
Boiling point elevation and freezing point depression | Chemistry | Khan Academy
Boiling point elevation and freezing point depression | Chemistry | Khan AcademyRaising or lowering the boiling or freezing point of a solution by adding solute.Watch the next lesson: https://www.khanacademy.org/science/chemistry/chemical-equil…
- 5 Sep 09, 3:17am -
Solubility and intermolecular forces | Chemistry | Khan Academy
Solubility and intermolecular forces | Chemistry | Khan AcademySolubility of salt and gas solutes in liquid solvent.Watch the next lesson: https://www.khanacademy.org/science/chemistry/states-of-matter-and-intermolecular-forces/introduction-to-…
- 5 Sep 09, 3:17am -
Suspensions, colloids and solutions | Chemistry | Khan Academy
Suspensions, colloids and solutions | Chemistry | Khan AcademySuspensions, colloids and solutions. The difference between molarity and molality.Watch the next lesson: https://www.khanacademy.org/science/chemistry/states-of-matter-and-intermolec…
- 5 Sep 09, 3:17am -
Vapor pressure | States of matter and intermolecular forces | Chemistry | Khan Academy
Vapor pressure | States of matter and intermolecular forces | Chemistry | Khan AcademyVapor pressure, volatility, and evaporation.Watch the next lesson: https://www.khanacademy.org/science/chemistry/states-of-matter-and-intermolecular-forces/st…
- 2 Sep 09, 5:42pm -
Covalent networks, metallic crystals, and ionic crystals | Chemistry | Khan Academy
Covalent networks, metallic crystals, and ionic crystals | Chemistry | Khan AcademyCovalent networks, metallic crystals, and ionic crystals: Some of the strongest molecular structures.Watch the next lesson: https://www.khanacademy.org/science/c…
- 2 Sep 09, 4:54am -
Van der Waals forces | States of matter and intermolecular forces | Chemistry | Khan Academy
Van der Waals forces | States of matter and intermolecular forces | Chemistry | Khan AcademyVan der Waals forces: London dispersion forces, dipole-dipole forces, and hydrogen bonding.Watch the next lesson: https://www.khanacademy.org/science/ch…
- 2 Sep 09, 12:33am -
Phase diagrams | States of matter and intermolecular forces | Chemistry | Khan Academy
Phase diagrams | States of matter and intermolecular forces | Chemistry | Khan AcademyUnderstanding and interpreting phase diagramsWatch the next lesson: https://www.khanacademy.org/science/chemistry/states-of-matter-and-intermolecular-forces/i…
- 1 Sep 09, 10:21pm -

Khan Academy - Chemistry 98-104

Specific heat, heat of fusion and vaporization example | Chemistry | Khan Academy
Specific heat, heat of fusion and vaporization example | Chemistry | Khan AcademySpecific heat and phase changes: Calculating how much heat is needed to convert 200 g of ice at -10 degrees C to 110 degree steam.Watch the next lesson: https://ww…
- 1 Sep 09, 8:34pm -
States of matter follow-up | States of matter and intermolecular forces | Chemistry | Khan Academy
States of matter follow-up | States of matter and intermolecular forces | Chemistry | Khan AcademyMore on plasma and hydrogen bonds.Watch the next lesson: https://www.khanacademy.org/science/chemistry/states-of-matter-and-intermolecular-forces/…
- 1 Sep 09, 8:34pm -
States of matter | States of matter and intermolecular forces | Chemistry | Khan Academy
States of matter | States of matter and intermolecular forces | Chemistry | Khan AcademyIntroduction to the states or phases of matter.Watch the next lesson: https://www.khanacademy.org/science/chemistry/states-of-matter-and-intermolecular-forc…
- 30 Aug 09, 10:12pm -
Ideal gas equation example 2 | Chemistry | Khan Academy
Ideal gas equation example 2 | Chemistry | Khan AcademyPV/T is a constant. Figuring out the volume of an ideal gas at standard temperature and pressure (STP). Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemis…
- 28 Aug 09, 10:12pm -
Ideal gas equation example 4 | Chemistry | Khan Academy
Ideal gas equation example 4 | Chemistry | Khan AcademyFiguring out the molar mass of a mystery molecule at STP. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemistry/gases-and-kinetic-molecular-theory/ideal-g…
- 28 Aug 09, 10:12pm -
Ideal gas equation example 3 | Chemistry | Khan Academy
Ideal gas equation example 3 | Chemistry | Khan AcademyFiguring out the mass of Oxygen we have at a given P, V, and T, and why we need to check the units of R. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemi…
- 28 Aug 09, 10:12pm -
Partial pressure example | Chemistry | Khan Academy
Partial pressure example | Chemistry | Khan AcademyFiguring out the partial pressures of various gases in a container given the mass percent composition. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemistry/g…
- 28 Aug 09, 10:12pm -
Ideal gas equation example 1 | Chemistry | Khan Academy
Ideal gas equation example 1 | Chemistry | Khan AcademyFiguring out the number of moles of gas we have using the ideal gas equation: PV=nRT. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemistry/gases-and-kine…
- 28 Aug 09, 10:12pm -
Ideal gas equation: PV = nRT | Chemistry | Khan Academy
Ideal gas equation: PV = nRT | Chemistry | Khan AcademyIntuition behind the ideal gas equation: PV=nRT. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemistry/gases-and-kinetic-molecular-theory/ideal-gas-laws/v…
- 28 Aug 09, 10:12pm -
Molecular and Empirical Formulas
Molecular and Empirical FormulasIntroduction to molecular and empirical formulas. Calculating molecular mass.More free lessons at: http://www.khanacademy.org/video?v=gfBcM3uvWfsFrom:Khan AcademyViews:831361 1865ratingsTime:15:54Mor…
- 27 Aug 09, 10:54pm -
Formula from Mass Composition
Formula from Mass CompositionFiguring out the empirical formula from a molecules mass compositionFrom:Khan AcademyViews:428628 848ratingsTime:12:58More inEducation
- 27 Aug 09, 10:54pm -
Stoichiometry | Chemical reactions and stoichiometry | Chemistry | Khan Academy
Stoichiometry | Chemical reactions and stoichiometry | Chemistry | Khan AcademyIntroduction to stoichiometry. Using the balanced reaction to find molar ratios. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemi…
- 27 Aug 09, 10:54pm -
Stoichiometry: Limiting reagent | Chemical reactions and stoichiometry | Chemistry | Khan Academy
Stoichiometry: Limiting reagent | Chemical reactions and stoichiometry | Chemistry | Khan AcademyStoichiometry problem where we find the limiting reagent and calculate grams of product formed. Created by Sal Khan.Watch the next lesson: https://…
- 27 Aug 09, 10:54pm -
Balancing Chemical Equations
Balancing Chemical EquationsThe art of balancing equations in chemistry!More free lessons at: http://www.khanacademy.org/video?v=RnGu3xO2h74About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education…
- 27 Aug 09, 10:54pm -
The mole and Avogadro's number | Atoms, compounds, and ions | Chemistry | Khan Academy
The mole and Avogadro's number | Atoms, compounds, and ions | Chemistry | Khan AcademyIntroduction to the idea of a mole as a number (vs. an animal).Watch the next lesson: https://www.khanacademy.org/science/chemistry/atomic-structure-and-prope…
- 27 Aug 09, 10:54pm -
Other Periodic Table Trends
Other Periodic Table TrendsElectronegativity, metallic nature and atomic radius.From:Khan AcademyViews:418670 1161ratingsTime:15:39More inEducation
- 27 Aug 09, 10:54pm -
Ionic, covalent, and metallic bonds | Chemical bonds | Chemistry | Khan Academy
Ionic, covalent, and metallic bonds | Chemical bonds | Chemistry | Khan AcademyIntroduction to ionic, covalent, polar covalent and metallic bonds.Watch the next lesson: https://www.khanacademy.org/science/chemistry/chemical-bonds/types-chemical…
- 27 Aug 09, 10:54pm -
Another mass composition problem | Chemistry | Khan Academy
Another mass composition problem | Chemistry | Khan AcademyAnother exercise converting a mass composition to an empirical formula. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemistry/chemical-reactions-stoic…
- 27 Aug 09, 10:54pm -
Periodic Table Trends: Ionization Energy
Periodic Table Trends: Ionization EnergyWhat an ion is. Using the periodic table to understand how difficult it is to ionize an atom.More free lessons at: http://www.khanacademy.org/video?v=ywqg9PorTAwFrom:Khan AcademyViews:967091 3129…
- 26 Aug 09, 5:13pm -
Groups of the Periodic Table
Groups of the Periodic TableProperties of alkali, alkaline earth and transition metals. Halogens and noble gases.More free lessons at: http://www.khanacademy.org/video?v=LDHg7VgzsesFrom:Khan AcademyViews:845681 1460ratingsTime:11:51…
- 26 Aug 09, 3:16pm -
Valence Electrons
Valence ElectronsLooking at valence electrons to figure out reactivityMore free lessons at: http://www.khanacademy.org/video?v=1TZA171yxY4From:Khan AcademyViews:835037 1613ratingsTime:15:23More inEducation
- 26 Aug 09, 3:16pm -
Orbitals | Electronic structure of atoms | Chemistry | Khan Academy
Orbitals | Electronic structure of atoms | Chemistry | Khan AcademyIntroduction to orbitals. Relates energy shell to rows and periods in the periodic table. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemistr…
- 25 Aug 09, 10:24pm -
Electron configurations 2 | Electronic structure of atoms | Chemistry | Khan Academy
Electron configurations 2 | Electronic structure of atoms | Chemistry | Khan AcademyFiguring out configurations for the d-block elements. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chemistry/electronic-struct…
- 25 Aug 09, 10:24pm -
Electron Configurations
Electron ConfigurationsIntroduction to using the periodic table to determine electron configurationsAbout Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learner…
- 25 Aug 09, 10:24pm -
More on orbitals and electron configuration | Chemistry | Khan Academy
More on orbitals and electron configuration | Chemistry | Khan AcademyHow electron configuration is related to orbitals and the structure of the periodic table. Created by Sal Khan.Watch the next lesson: https://www.khanacademy.org/science/chem…
- 25 Aug 09, 10:24pm -
Introduction to the atom | Chemistry of life | Biology | Khan Academy
Introduction to the atom | Chemistry of life | Biology | Khan AcademyThe atom, proton, neutron and electronWatch the next lesson: https://www.khanacademy.org/science/biology/chemistry--of-life/electron-shells-and-orbitals/v/orbitals?utm_source=…
- 25 Aug 09, 10:24pm -