

  time  views  
 Showing segment congruence equivalent to having same length  6:45  1,286  
 Area models for multiplying expressing with negative terms  5:17  6,967  
 Hydrogen bonds  6:39  5,501  
 Intermolecular forces and vapor pressure  6:40  6,882  
 Iondipole forces  4:40  4,743  
 Dipole dipole forces  6:46  7,234  
 Guided meditation for procrastination  7:00  21,707  
 Guided meditation visualizing thoughts as the surface of an ocean  7:29  6,157  
 London dispersion forces  9:43  4,654  
 Guided meditation for high school students  12:51  15,524  
 The development of an American culture  AP US History  Khan Academy  9:58  9,713  
 Showing segment congruence equivalent to having same length  4:56  2,871  
 Idea behind hypothesis testing  9:58  16,129  
 Conclusion for a two sample t test using a P value  2:49  9,704  
 Dilating shapes: shrinking  Performing transformations  High school geometry  Khan Academy  2:26  4,466  
 Health insurance primer  8:27  12,932  
 Mapping shapes  Performing transformations  High school geometry  Khan Academy  8:50  4,182  
 The Court in Action  AP US Government and Politics  Khan Academy  6:12  5,755  
 Help Jason Give Back to Khan Academy  1:43  19,932  
 Formal charge  Molecular and ionic compound structure and properties  AP Chemistry  Khan Academy  7:30  13,762  
 Millions Learn for Free, Made Possible by People Like You  1:10  9,981  
 Resonance  Molecular and ionic compound structure and properties  AP Chemistry  Khan Academy  7:24  10,655  
 Exceptions to the octet rule  AP Chemistry  Khan Academy  7:10  4,248  
 Worked example: Lewis diagram of xenon difluoride (XeF₂)  AP Chemistry  Khan Academy  3:11  3,054  
 Worked example: Lewis diagram of the cyanide ion (CN⁻)  AP Chemistry  Khan Academy  4:28  4,871  
 Drawing Lewis diagrams  AP Chemistry  Khan Academy  7:80  4,027  
 Worked example: Lewis diagram of formaldehyde (CH₂O)  AP Chemistry  Khan Academy  6:80  2,123  
 Give a gift that will change a life.  0:21  32,605  
 Causation from 19802020  9:43  11,821  
 Worked example: Using formal charges to evaluate nonequivalent resonance structures  Khan Academy  8:20  6,221  
 Structure of alloys  6:30  3,334  
 Structure of ionic solids  5:43  3,502  
 All in for Education Livestream with Sal Khan  39:57  15,539  
 Lattice Energy  8:10  3,696  
 All in for Education with Khan Academy. Give today!  1:10  16,719  
 Interpreting potential energy and internuclear distance graph  5:21  3,910  
 You Can Learn Anything (30 sec)  0:31  8,693,941  
 Bond distance and potential energy  6:42  5,768  
 Spectrum of bonds and electronegativity  4:43  5,715  
 Types of bonds between metals and non metals  5:12  4,502  
 Electron configuration of ions  3:56  8,899  
 Khan Stories: Jason Spyres  4:70  31,659  
 What to do the night before an exam: 3 tips from Sal Khan  1:25  39,332  
 Ionic bonds  4:10  9,838  
 Covalent and polar covalent bonds  5:43  4,216  
 Metallic bonds  3:00  4,407  
 Isotopes  5:28  6,327  
 Mass spectrometry introduction  4:18  6,684  
 Making line plots with fractional data  3:15  2,273  
 Interpreting line plots  2:45  1,039  
 Line plots with fractions  3:36  816  
 Measure lengths to nearest 1/4  2:13  999  
 Multiplication and division relationship for fractions  3:35  2,181  
 Dividing fractions and whole number word problems  4:26  1,027  
 Fraction division in context  3:22  688  
 Mass spectrum for identifying element  3:21  4,322  
 Calculating percent mass of an element  5:38  3,493  
 Example calculating moles in mass of sample  5:49  6,202  
 How to reduce test prep anxiety: 3 tips from Sal Khan  4:42  48,841  
 Course Mastery Sal (intro only)  2:60  30,867  
 Mastery Learning in Mr. Vandenberg’s Class  4:49  8,602  
 Continuity and change in American society, 17541800  AP US History  Khan Academy  9:11  10,322  
 Introduction to the mole and Avogadro's number  8:57  10,184  
 Introduction to average atomic mass  8:38  8,924  
 Subtracting fractions with unlike denominators introduction  3:36  9,399  
 Emperical formula from mass composition  4:35  2,407  
 Adding fractions with unlike denominators introduction  4:20  6,538  
 Fraction multiplication as scaling examples  3:38  5,469  
 Estimating adding fractions with unlike denominators  4:57  2,795  
 Coulomb's Law and trends in the periodic table  10:43  11,636  
 Groups, valence electrons and ionic compounds  7:55  2,592  
 Example using ionization energies to identify element  2:31  2,171  
 Groups of the periodic table  7:41  3,598  
 Introduction to photoelectron spectroscopy  8:24  1,551  
 Aufbau principle for electron configuration  7:53  2,918  
 Introduction to photoelectron spectroscopy  8:24  1,533  
 Percent composition of mixtures  6:41  1,139  
 Valence electrons  5:11  1,251  
 Orbitals, shells and energy levels  9:41  10,285  
 Introduction to electron configuration  5:80  5,065  
 Worked example Percent composition of a mixture  5:21  3,631  
 Percent composition of mixtures  6:29  1,960  
 Empirical formula from combustion reaction  10:20  900  
 Example comparing mass percentages of element in comounds  3:00  600  
 Effects of transatlantic voyages, 14921607  Khan Academy  AP US History  7:24  6,525  
 Equivalent fractions on number lines  4:34  4,491  
 Comparing fractions word problems  5:70  1,112  
 Equivalent fractions with models  5:36  4,567  
 Subtracting mixed numbers with regrouping  3:00  947  
 Multiplying mixed numbers  2:24  815  
 Fraction multiplcation on the number line  3:10  524  
 Mixed number subtraction  2:18  1,143  
 Mixed number addition with regrouping  3:40  1,058  
 Adding mixed numbers with like denominators  2:53  398  
 Reform in the Gilded Age  AP US History  Khan Academy  8:80  6,464  
 Area models for factoring expressions  3:50  4,415  
 Multiplying expressions with area models  4:60  1,662  
 Interpreting features of a quadratic model  2:37  1,216  
 Worked examples factoring completely  4:00  1,299  
 Exponential decay word problems  4:00  716  

