Tyler DeWitt

Tyler DeWitt has many YouTube videos that cover many of the topics in a first semester chemistry course. I have organized his videos from his channel on YouTube below. His newest effort is a blog style website at https://socratic.org/chemistry that covers many of the topics in the first year of chemistry including some higher concepts.

Numbers and Units in Science

Scientific Notation

• Scientific Notation: Introduction - https://youtu.be/Dme-G4rc6NI

• Scientific Notation Practice Problems - https://youtu.be/7iGAa0BVS9I

• Scientific Notation: Addition and Subtraction - https://youtu.be/PYTp75sryWA

• Scientific Notation: Multiplication and Division - https://youtu.be/ciFOlirz4Js

• Scientific Notation and Significant Figures (1.7)

Significant Figures

• • Significant Figures Made Easy!

  • Significant Figures Made Easy! (1.2)

  • Significant Figures and Zero (1.3)

  • Significant Zero Practice Problems (1.4)

  • Multiplication and Division with Significant Zeros (1.5)

  • Add and Subtract with Significant Figures (1.6)

  • Scientific Notation and Significant Figures (1.7)

  • Scientific Notation and Significant Zeros (1.8)

  • Using Significant Figures Practice Problems (1.9)

  • Why are Significant Figures Important?

  • Significant Figures with Counting Numbers and Measurements

Accuracy and Precision

• Accuracy and Precision - https://youtu.be/5APhVxCEPFs

• Accuracy and Precision (Part 2) - https://youtu.be/3G5IWRDfgTw

• Error and Percent Error - https://youtu.be/h--PfS3E9Ao

Unit Conversions (Dimensional Analysis)

• • Understanding Conversion Factors - https://youtu.be/HZ9weUkSdoY

  • Converting Units with Conversion Factors - https://youtu.be/7N0lRJLwpPI

  • Converting Units using Multiple Conversion Factors - https://youtu.be/LdZ00OFAfaQ

  • Multiple Conversion Factors (Part 2) - https://youtu.be/BKsPi-VXp5U

  • Converting Metric Units of Volume - https://youtu.be/Ynp6rG45RZA

  • Unit Conversions with Area and Volume - https://youtu.be/aFAk8JA4-d8

Density

• Density Practice Problems - https://youtu.be/7tVebi3TSsg

• Advanced Density Problem 1 - https://youtu.be/4tYXaCADxfE

• Advanced Density Problem 2 - https://youtu.be/TFXC3SV50R0

• Advanced Density Problem 3 - https://youtu.be/5tVNGlG1GBc

• Density: A Story of Archimedes and the Golden Crown - https://youtu.be/KMNwXUCXLdk

Atoms, Elements, Molecules and Compounds

• • What are the Diatomic Elements? - https://youtu.be/MV3uXga-u-s

• Super Common Mistake: Diatomic Elements - https://youtu.be/0vVCjEpxmEs

Atomic Structure

• Model of the Atom Timeline - https://youtu.be/NSAgLvKOPLQ

• Discovery of the Electron: Cathode Ray Tube Experiment - https://youtu.be/Rb6MguN0Uj4

• Discovery of the Nucleus: Rutherford's Gold Foil Experiment - https://youtu.be/dNp-vP17asI

• Charge of an Electron: Millikan's Oil Drop Experiment - https://youtu.be/2HhaQtvICe8

• Atomic Structure: Discovery of the Neutron - https://youtu.be/_7DAlvRI1M4

• Basic Atomic Structure: A Look Inside the Atom - https://youtu.be/h6LPAwAmnCQ

• Atomic Number, Mass Number, and Net Charge - https://youtu.be/dRfrvpVdKGM

• Practice Problems: Net Charge, Mass Number, and Atomic Number - https://youtu.be/ZzkL3DNjz_s

• What are isotopes? - https://youtu.be/EboWeWmh5Pg

  • Isotope Notation - https://youtu.be/BYiu0kIWd30

• Isotopes and Elements Practice Problems - https://youtu.be/n4WZ0-fItt8

• What's an Ion? - https://youtu.be/WWc3k2723IM

• Huge Misconception: Protons, Electrons, Atoms, and Ions - https://youtu.be/GyJBstOn4t4

  • What's the Difference between an Atom and a Molecule? - https://youtu.be/RbbOBPfH_uk

Atomic Mass

• Atomic Mass: Introduction - https://youtu.be/7fYpEnxhKQk

• What is a weighed average? - https://youtu.be/slFqL86q3EA

• Atomic Mass: How to Calculate Isotope Abundance - https://youtu.be/6CfSyGd5Ry4

• How to Calculate Atomic Mass Practice Problems - https://youtu.be/ULRsJYhQmlo

• Atomic Mass Calculations: Extra Help and Explanation - https://youtu.be/7BnCKq4RM7I

• What's the Difference between Mass Number and Atomic Weight? - https://youtu.be/_jmKgdi3jjQ

• What's the Difference between Mass Number and Atomic Mass? - https://youtu.be/m15DWkkGe_0

The Periodic Table and Electron Configuration

• Valence Electrons and the Periodic Table - https://youtu.be/yADrWdNTWEc

• Ionization Energy and Atomic Radius - https://youtu.be/Mmti4kKDcqA

Nuclear Chemistry

• • • Alpha Decay - https://youtu.be/CwExbnOzc4o

    • Beta Decay - https://youtu.be/uqAA_D9Mi_I

    • Positron Decay - https://youtu.be/bjuZSvZukAw

    • Electron Capture - https://youtu.be/sg_XoUDsP08

    • Nuclear Transmutation Part 1 - https://youtu.be/Hpn5G1FiuCs

    • Nuclear Transmutation Part 2 - https://youtu.be/GBrdmlcp5mA

    • Isotope Notation - https://youtu.be/BYiu0kIWd30

    • Nuclear Fission - https://youtu.be/_pY5HeZpNr8

    • Nuclear Half Life: Intro and Explanation - https://youtu.be/opjJ-3Tkfyg

    • Nuclear Half Life: Calculations - https://youtu.be/WAsmY4ocWSA

Compounds

• Ionic vs. Molecular - https://youtu.be/PKA4CZwbZWU

• What's an Ion? - https://youtu.be/WWc3k2723IM

• Ionic Bonding Introduction - https://youtu.be/Qf07-8Jhhpc

• Ionic Bonding Part 2 - https://youtu.be/5EwmedLuRmw

• Ionic Bonding part 3 - https://youtu.be/RkZNYuSho0M

• Ionic Bonding FAQ: Valence Electrons 1 - https://youtu.be/PEJsjF4_wlE

• Ionic Bonding FAQ: Valence Electrons 2 - https://youtu.be/g1wEoXXADkI

• Biggest Mistakes in Chemistry: Polyatomic Ions - https://youtu.be/aTa9waoqvIg

• Bonding in Polyatomic ions and Compounds - https://youtu.be/hQ1mEe7pDyg

Naming Compounds (Nomenclature)

• • Naming Ionic Compounds with Transition Metals Introduction - https://youtu.be/Rq0A-AHdB74

  • Naming Ionic Compounds with Transition Metals Practice Problems - https://youtu.be/8KSWRy2MMyM

  • Naming Covalent Molecular Compounds - https://youtu.be/DejkvR4pvRw

  • Naming Acids Introduction - https://youtu.be/5Jb2u9ihfm4

  • Naming Acids Practice Problems - https://youtu.be/VyjnMk-Ta10

Writing chemical formula

• • Writing Ionic Formulas: Introduction - https://youtu.be/URc75hoKGLY

  • Writing Ionic Formulas: Practice Problems - https://youtu.be/X_LVANMpJ0c

  • Transition Metals in Ionic Formulas - https://youtu.be/Da_ah6TqAss

  • Writing Ionic Formulas with Transition Metals - https://youtu.be/H4nfE8gRX7Q

  • Writing Formulas with Polyatomic Ions - https://youtu.be/p9iQ5Qn42DM

Mass, Moles and Avogadro's Number

• • Introduction to Moles - https://youtu.be/wI56mHUDJgQ

  • Counting Atoms: Intro to Moles Part 2 - https://youtu.be/hY7lzRBylSk

  • Converting Between Moles, Atoms, and Molecules - https://youtu.be/HMAOrGpkTsQ

  • Converting between Moles, Atoms, and Molecules (Part 2) - https://youtu.be/kGNtnq0kGKk

  • Converting Between Moles and Liters of a Gas at STP - https://youtu.be/Y8e7T09SKZ0

  • How to Calculate Molar Mass Practice Problems - https://youtu.be/Qflq48Foh2w

  • The Most Common Mistake with Moles! - https://youtu.be/wHwGm9oL-GA

  • Very Common Mole Questions - https://youtu.be/BO9M1hbs88s

  • Calculate the Mass of a Single Atom or Molecule - https://youtu.be/vqTg4cYwHXY

  • Converting Between Grams and Moles - https://youtu.be/CMnkSb2YsXI

  • Converting Between Grams and Moles (Part 2) - https://youtu.be/0RXB8xNmJNM

  • What's the difference between a Mole and a Molecule? - https://youtu.be/2P--fRgdSF0

Empirical and Molecular Formula

• • Empirical Formula and Molecular Formula Introduction - https://youtu.be/wnRaBWvhYKY

  • Writing Empirical Formula Practice Problems - https://youtu.be/ucU5PD6W3Ik

  • Calculating Molecular Formula from Empirical Formula - https://youtu.be/J_MtVs0aBdU

  • Percent Composition By Mass - https://youtu.be/lywmGCfIUIA

  • Percent Composition Common Mistakes - https://youtu.be/lh1endFwo80

Lewis Structures, Geometry and Polarity

Lewis Structures

• Bonding in Polyatomic ions and Compounds - https://youtu.be/hQ1mEe7pDyg

Valence Shell Electron Pair Repulsion Model

• VSEPR Theory: Introduction - https://youtu.be/nxebQZUVvTg

• VSEPR Theory Part 2: Trigonal Bipyramidal Family - https://youtu.be/cdo6FtSU_k8

• VSEPR Theory Part 3: Octahedral Family - https://youtu.be/Qcy-TjJ10xk

• VSEPR Theory: Common Mistakes - https://youtu.be/8Tl_bDWCAmo

• VSEPR Theory Practice Problems - https://youtu.be/xwgid9YuH58

• VSEPR Theory Practice Problems (Advanced) - https://youtu.be/Ip8v87vxSok

Intermolecular Forces (IMF)

• Hydrogen Bonding and Common Mistakes - https://youtu.be/PyC5r2mB4d4

• Don/t Make this Mistake with Hydrogen Bonding! - https://youtu.be/qgPrkheUTNI

States of Matter: Gases, Liquids and Solids

Gas Measurements

• • What's the Point of Kelvin Temperatures? - https://youtu.be/AHKBXBru_Fg

  • Absolute Zero - https://youtu.be/JHXxPnmyDbk

  • Gas Pressure Conversions - https://youtu.be/qv81QCGNnVo

  • Gas Pressure: The Basics - https://youtu.be/zvh9uv2Hxx4

  • Measuring Gas Pressure and Atmospheric Pressure - https://youtu.be/GjWs_MzoLbA

  • Atmospheric Pressure - https://youtu.be/YU4ZLSH5m1Q

  • Measuring Gas Pressure and Atmospheric Pressure - https://youtu.be/GjWs_MzoLbA

The Gas Laws

• • Boyle's Law -https://youtu.be/ZoGtVVu3ymQ

  • Charles' Law - https://youtu.be/oIfFoiwRCVE

  • Avogadro's Law - https://youtu.be/i-vA9uLSf7Y

  • Gay Lussac's Law Practice Problems - https://youtu.be/wHD-32rUHkE

  • Gay Lussac's Law Practice Problems (part 2) - https://youtu.be/lJzHzEnkXJE

  • Rearranging Charles', Gay-Lussac's, and Avogadro's Laws - https://youtu.be/tV1OzhEaQkY

  • Combined Gas Law - https://youtu.be/bftkRnTcFj8

  • Rearranging the Combined Gas Equation - https://youtu.be/V89vHYQKLJo

  • Be Lazy! Don't Memorize the Gas Laws! - https://youtu.be/UKUmYU6Q1cA

The Ideal Gas Law

• • Ideal Gas Law Introduction - https://youtu.be/WhP6zJbSxec

  • Ideal Gas Law Practice Problems - https://youtu.be/TqLlfHBFY08

  • Ideal Gas Law Practice Problems with Molar Mass - https://youtu.be/0VaupcMr3oQ

  • Ideal Gas Law Practice Problems with Density -https://youtu.be/SYBaJ01uBsI

  • Ideal Gas Law: Where did R come from? - https://youtu.be/kBgzzwCTddc

  • Which gas equation do I use? - https://youtu.be/kOp-3CMb6nY

  • Gas Equation FAQ and Extra Help - https://youtu.be/Zl1csqFVWTA

  • Gas Stoichiometry: Equations Part 1 - https://youtu.be/wUckvmyvMi8

  • Gas Stoichiometry: Equations Part 2 - https://youtu.be/qvOVXg24Npo

  • Converting Between Moles and Liters of a Gas at STP - https://youtu.be/Y8e7T09SKZ0

Phase Changes

• Phase Changes - https://youtu.be/EZHmUTmJtF8

• Phase Changes: Exothermic or Endothermic - https://youtu.be/0cUK4jcAEaU

• How does a liquid become a gas? - https://youtu.be/K1E7LFUf5zs

• Biggest Mistakes in Chemistry: Boiling and Evaporation - https://youtu.be/fSD-mEHWAMk

Solutions

• • Solutions Overview and Types - https://youtu.be/AD22tefqhEQ

  • Aqueous Solutions, Dissolving and Solvation - https://youtu.be/AD22tefqhEQ

  • Biggest Mistakes in Chemistry: Dissolving - https://youtu.be/cnSTsLvyuOk

  • Rate of Dissolving and Factors that Affect it - https://youtu.be/0SQySg9ShGU

  • Pressure and Gas Solubility (Henry's Law) - https://youtu.be/xT2x7okaqQM

  • Temperature and Solubility: Solids and Gases - https://youtu.be/awMdCCidgOc

  • Colloids - https://youtu.be/meZqm7HznZg

Concentration

• Molarity Practice Problems - https://youtu.be/SXf9rDnVFao

• Molarity Practice Problems (Part 2) - https://youtu.be/sWfn8hbXRp8

• What's the Difference Between Molarity and Molality? - https://youtu.be/96oNrVnTk50

• What's the Point of Molality?!? - https://youtu.be/LPj73GjBDkg

Balancing Reactions

• • Introduction to Balancing Chemical Equations - https://youtu.be/yA3TZJ2em6g

  • Balancing Chemical Equations Practice Problems - https://youtu.be/eNsVaUCzvLA

Type of Reactions (Classification)

• • Types of Chemical Reactions - https://youtu.be/aMU1RaRulSo

  • Classifying Types of Chemical Reaction Practice Problems - https://youtu.be/2qX9MOQOmAM

  • Sodium Explodes in Water...Why Doesn't Salt?!? - https://youtu.be/CArZeDTwVh4

Oxidation Reduction Reactions (REDOX)

• • Introduction to Oxidation Reduction (Redox) Reactions - https://youtu.be/5rtJdjas-mY

  • The Oxidation Reduction Question that Tricks Everyone! - https://youtu.be/JYc4Blcxmps

  • Oxidizing Agents and Reducing Agents - https://youtu.be/kEJUYDHhuCg

  • How to Calculate Oxidation Numbers Introduction - https://youtu.be/-a2ckxhfDjQ

  • How to Calculate Oxidation Number Practice Problems - https://youtu.be/zpCy7KwqDO8

  • How to Balance Redox Equations in Acidic Solution - https://youtu.be/IZ1tKxsqV74

  • How to Balance Redox Equations in Acidic Solution Example 1 - https://youtu.be/pESvgnP64ME

  • Balance Redox Equations in Acid Example 2 (Advanced) - https://youtu.be/i9s9Qv4EcI0

  • How to Balance Redox Equations in Basic Solution - https://youtu.be/v5sDNmYCaqo

  • Balancing Redox Equations in Basic Solution Example Problem - https://youtu.be/NM5bByk6gjk

Mass Balancing - Stoichiometry

• • Mole Ratio Practice Problems - https://youtu.be/S6UQX7ZdkTg

  • Introduction to Limiting Reactant and Excess Reactant - https://youtu.be/nZOVR8EMwRU

  • Limiting Reactant Practice Problem - https://youtu.be/Mlu_v8rE1TY

  • Limiting Reactant Practice Problem (Advanced) - https://youtu.be/N0dTXcoHI-I

Calorimetry and Thermochemistry

• Introduction to Thermochemistry and Enthaply - https://youtu.be/g6zUA-3f8pw

• Tricky Question: Exothermic or Endothermic? - https://youtu.be/i3mYWB2fNp4

• Phase Changes: Exothermic or Endothermic - https://youtu.be/0cUK4jcAEaU

• Food Calorimetry Lab: Explanation - https://youtu.be/uv7sVIqgyqU

• Food Calorimetry Lab: Calculations - https://youtu.be/Ak7PN8tn4cU

• Food Calorimetry: Common Mistakes - https://youtu.be/1Ml-Bg81BVI

• Thermochemical Equations Practice Problems - https://youtu.be/8m_FCe5aCqY

Electrochemistry

• • Introduction to Electrochemistry - https://youtu.be/teTkvUtW4SA

  • Galvanic Cells (Voltaic Cells) - https://youtu.be/7b34XYgADlM

  • Electrolysis - https://youtu.be/dRtSjJCKkIo

  • Electroplating - https://youtu.be/NClagKbLUMM

  • Electroplating Part 2 - https://youtu.be/0NwSY58g1uY

  • How do Fuel Cells Work? - https://youtu.be/OmVnIIgDA7o

  • Fuel Cell Demo - https://youtu.be/3BanjQ586Mo