AP Chemistry
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1
Introduction to Chemistry, Periodic Table - AP Chemistry
2:36

Introduction to Chemistry, Periodic Table - AP Chemistry

This video provides an introduction to chemistry, and covers some important features of the periodic table. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
2
Atoms, Isotopes, Atomic Number, Mass Number - AP Chemistry
2:01

Atoms, Isotopes, Atomic Number, Mass Number - AP Chemistry

This AP Chemistry video explains the notation used in the periodic table, and the structure of atoms and isotopes. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
3
Moles, Molar Mass, Avogadro's Number - AP Chemistry
2:40

Moles, Molar Mass, Avogadro's Number - AP Chemistry

This AP Chemistry video defines the unit of mole using Avogadro's number, which is used to connect the mass of a substance to the number of its particles. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
4
Moles, Connecting Units - AP Chemistry
2:16

Moles, Connecting Units - AP Chemistry

This AP Chemistry video explains how the unit of mole connects other units in Chemistry. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
5
Mass Spectrometry, Molar Mass, Average Atomic Mass, Mass Defect - AP Chemistry
6:44

Mass Spectrometry, Molar Mass, Average Atomic Mass, Mass Defect - AP Chemistry

This AP Chemistry video explains mass spectrometry and how it is used to identify the isotopes of an element, interpreting the mass spectrum, relationship between the molar mass and average atomic mass, and the mass defect. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
Mass Spectrometry, Example - AP Chemistry
2:14

Mass Spectrometry, Example - AP Chemistry

This AP Chemistry video covers a worked example on mass spectrometry. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
7
Pure Substances - AP Chemistry
1:13

Pure Substances - AP Chemistry

This AP Chemistry video defines pure substances using several examples. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
8
Law of Definite Proportions, Pure Substances - AP Chemistry
1:16

Law of Definite Proportions, Pure Substances - AP Chemistry

This AP Chemistry video explains the law of definite proportions for pure substances. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
9
Empirical Formula, Pure Substances - AP Chemistry
0:55

Empirical Formula, Pure Substances - AP Chemistry

This AP Chemistry video defines the empirical formula for pure substances. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
10
Pure Substances, Percent Composition, Example - AP Chemistry
1:10

Pure Substances, Percent Composition, Example - AP Chemistry

This AP Chemistry video covers a worked example on determining the percentage composition of each element in a pure substance. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
11
Empirical Formula, Molecular Formula, Examples - AP Chemistry
2:57

Empirical Formula, Molecular Formula, Examples - AP Chemistry

This AP Chemistry video covers worked examples on finding the empirical or molecular formula of a compound in a pure substance. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
12
Composition of Mixtures, Formula Units - AP Chemistry
1:23

Composition of Mixtures, Formula Units - AP Chemistry

This AP Chemistry video explains the composition of mixtures and formula units using several examples. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
13
Composition of Mixtures, Examples - AP Chemistry
3:00

Composition of Mixtures, Examples - AP Chemistry

This AP Chemistry video covers worked examples on the composition of mixtures. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
14
Coulomb Force, Bohr Model, Atoms - AP Chemistry
1:32

Coulomb Force, Bohr Model, Atoms - AP Chemistry

This AP Chemistry video explains Coulomb's law and the forces between charges in an atom using the simplified Bohr model. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
15
Energy Levels, Shells, Subshells, Orbitals - AP Chemistry
2:09

Energy Levels, Shells, Subshells, Orbitals - AP Chemistry

This AP Chemistry video explains the types of shells, subshells and orbitals present in an atom at different energy levels. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
16
Shapes of Orbitals - AP Chemistry
1:51

Shapes of Orbitals - AP Chemistry

This AP Chemistry video explains the shapes of s and p orbitals, which are obtained from quantum mechanics. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
17
Electron Configuration, Aufbau, Pauli's Exclusion, Hund's Rule - AP Chemistry
2:07

Electron Configuration, Aufbau, Pauli's Exclusion, Hund's Rule - AP Chemistry

This AP Chemistry video explains Aufbau's rule, Pauli's exclusion principle and Hund's rule for determining the electron configuration of an atom. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
18
Electron Configuration, Exceptions to the Aufbau Rule, Chromium - AP Chemistry
1:59

Electron Configuration, Exceptions to the Aufbau Rule, Chromium - AP Chemistry

This AP Chemistry video explains how to determine the electron configuration for an atom which is an exception to Aufbau's rule, using Chromium as an example. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
19
Electron Configuration, Silicon, Iron, Examples - AP Chemistry
3:09

Electron Configuration, Silicon, Iron, Examples - AP Chemistry

This AP Chemistry video covers worked examples on determining the electron configuration of an atom. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
20
Valence Electrons, Noble Gas Notation, Ionisation Energy - AP Chemistry
2:12

Valence Electrons, Noble Gas Notation, Ionisation Energy - AP Chemistry

This AP Chemistry video defines valence electrons, explains how to write the electron configuration of an atom using shorthand (or noble gas) notation, and how to qualitatively estimate the ionisation energy using the energy analog of Coulomb's law. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
21
Shielding, Effective Nuclear Charge - AP Chemistry
1:51

Shielding, Effective Nuclear Charge - AP Chemistry

This AP Chemistry video explains the concepts of electron shielding and effective nuclear charge to determine the ionisation energy of atoms and ions relative to each other. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
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22
Photoelectron Spectroscopy - AP Chemistry
1:45

Photoelectron Spectroscopy - AP Chemistry

This AP Chemistry video explains the steps of photoelectron spectroscopy, which is an experiment used to determine the electron configuration of an atom. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
23
Photoelectron Spectrum, Interpretation - AP Chemistry
1:22

Photoelectron Spectrum, Interpretation - AP Chemistry

This AP Chemistry video explains how to interpret a photoelectron spectrum to determine the electron configuration of an atom. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
24
Photoelectron Spectrum, Examples - AP Chemistry
2:40

Photoelectron Spectrum, Examples - AP Chemistry

This AP Chemistry video covers worked examples on interpreting a photoelectron spectrum to determine the electron configuration of an atom. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
25
Photoelectron Spectroscopy, Example - AP Chemistry
2:09

Photoelectron Spectroscopy, Example - AP Chemistry

This AP Chemistry video covers a worked example on obtaining the parameters of the electromagnetic radiation source from a photoelectron spectroscopy experiment. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
26
Periodic Trends, Ionisation Energy - AP Chemistry
1:42

Periodic Trends, Ionisation Energy - AP Chemistry

This AP Chemistry video explains the periodic trend in ionisation energy using the periodic table. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
27
Periodic Trends, Atomic Radius - AP Chemistry
1:19

Periodic Trends, Atomic Radius - AP Chemistry

This AP Chemistry video explains the periodic trend in atomic radius using the periodic table. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
28
Periodic Trends, Ionic Radius, Cation, Anion - AP Chemistry
1:39

Periodic Trends, Ionic Radius, Cation, Anion - AP Chemistry

This AP Chemistry video explains the periodic trend in ionic radius using the periodic table, and compares the atomic radii and ionic radii of atoms and ions. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
29
Periodic Trends, Electron Affinity - AP Chemistry
1:20

Periodic Trends, Electron Affinity - AP Chemistry

This AP Chemistry video explains the periodic trend in electron affinity using the periodic table, which is the energy released when an electron is attached to an atom to form an anion. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
30
Periodic Table, Trends, Electronegativity - AP Chemistry
1:09

Periodic Table, Trends, Electronegativity - AP Chemistry

This AP Chemistry video explains the periodic trend in electronegativity using the periodic table, which is the ability of an atom to attract an electron from another atom to form a chemical bond. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
31
Periodic Table, Trends, Worked Examples - AP Chemistry
3:44

Periodic Table, Trends, Worked Examples - AP Chemistry

This AP Chemistry video covers worked examples on periodic trends in the periodic table. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
32
Ionic Compounds - AP Chemistry
2:09

Ionic Compounds - AP Chemistry

This AP Chemistry video explains how ionic compounds are formed and the number of charges gained or lost based on the groups of the elements in the periodic table. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
33
Ionic Compounds from Transition Metals, Analogous Compounds - AP Chemistry
1:39

Ionic Compounds from Transition Metals, Analogous Compounds - AP Chemistry

This AP Chemistry video explains how to name different ionic compounds formed from a transition metal, and analogous ionic compounds. This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
34
Chemical Bond Types, Electronegativity Pauling Scale - AP Chemistry
2:38

Chemical Bond Types, Electronegativity Pauling Scale - AP Chemistry

This AP Chemistry video summarises the types of chemical bonds, being ionic, covalent (polar and non-polar) and metallic. This video is part of Unit 2 of AP Chemistry on Molecular and Ionic Compound Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
35
Covalent Bond Designations, Bond Length - AP Chemistry
1:38

Covalent Bond Designations, Bond Length - AP Chemistry

This AP Chemistry video explains the properties of single, double and triple covalent bonds. This video is part of Unit 2 of AP Chemistry on Molecular and Ionic Compound Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
36
Covalent Bonds, Polarity, Dipole Moment - AP Chemistry
1:23

Covalent Bonds, Polarity, Dipole Moment - AP Chemistry

This AP Chemistry video explains the polarity of covalent bonds, dipole moments and how to determine whether a bond is covalent or ionic. This video is part of Unit 2 of AP Chemistry on Molecular and Ionic Compound Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
37
Intramolecular Force, Potential Energy, Covalent Bonds - AP Chemistry
2:00

Intramolecular Force, Potential Energy, Covalent Bonds - AP Chemistry

This AP Chemistry video explains how to interpret the potential energy diagram for a covalent bond, and identify the bond length and bond energy. This video is part of Unit 2 of AP Chemistry on Molecular and Ionic Compound Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
38
Interactions, Cations and Anions, Coulomb's Law - AP Chemistry
1:42

Interactions, Cations and Anions, Coulomb's Law - AP Chemistry

This AP Chemistry video explains the interactions between cations and anions using Couloumb's law. This video is part of Unit 2 of AP Chemistry on Molecular and Ionic Compound Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
1 comment
39
Ionic Solids, Structure, Properties - AP Chemistry
1:56

Ionic Solids, Structure, Properties - AP Chemistry

This AP Chemistry video explains the structure and properties of ionic solids. This video is part of Unit 2 of AP Chemistry on Molecular and Ionic Compound Structure and Properties. You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.
1 comment

Mass Spectrometry, Example - AP Chemistry

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4 months ago
2

This AP Chemistry video covers a worked example on mass spectrometry.

This video is part of Unit 1 of AP Chemistry on Atomic Structure and Properties.

You can contact me through the comments and community section, or email me at drofeng@gmail.com for questions.

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