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Dr. K's Complete Second Semester General Chemistry II Course (Udemy.com)

A Course to Prepare You for College Level General Chemistry

Created by: Gregory Kowalczyk

Last updated May 2025

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What you will learn

  • All topics covered in a second semester of college chemistry course are contained in this Udemy course.
  • Each topic is covered is great detail with plenty of examples.
  • Course topics include:
  • Intermolecular Forces
  • Properties of Liquids
  • Phase Transitions
  • Phase Diagrams
  • Lattice Structure in Crystalline Solids
  • The Dissolution Process and Solutions
  • Concentration Units
  • Colligative Properties
  • Chemical Reaction Rates
  • Factors Affecting Rates of Reactions
  • The Rate Law
  • Integrated Rate Laws for Zeroth, First and Second Order Reactions
  • Collision Theory
  • Reaction Mechanisms
  • Catalysis
  • Chemical Equilibria
  • Equilibrium Constants and Reaction Quotient
  • Le Chatelier’s Principle
  • Equilibrium Calculations
  • Bronsted-Lowry Acids and Bases
  • pH and pOH
  • Relative Strength of Acids and Bases

How it compares

Against the other 503 rated Udemy courses in Teaching & Academics on CourseDuck:

  • Rating4.6 out of 5higher than 58% of them
  • Reviews177#383 of 504 by number of reviews
  • Length25.3 hourslonger than 93% of them
  • Last updatedMay 2025more recently than 66% of them

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Course Description

The course presented here is the exact General Chemistry II course that I taught as a university professor in a Chemistry Department that was certified by the American Chemical Society, the professional organization for chemists. All topics that are essential to any General Chemistry II course are covered here in detail. My teaching style for this Udemy course is exactly how I taught in the lecture halls. Each topic is explained in detail, terms are defined and then examples are done to show how the theory is applied in practice.


As was the case when I was teaching at the university, students have access to ample supplemental material, all of which will be in the Resource Folders. In addition to the 25+ hours of lectures, I have included a downloadable audio mp3 file of each lecture. For each lecture, I’ve included a Practice Assignment where you can test your understanding of the material. Also included is a detailed answer key for each Practice Assignment. A total of nearly 100 examples are worked out in the lectures and for each section I have included a list of the problems that you can download and follow along. Any graphs, figures or tables presented in the lectures are also available as downloadable files.


This course assumes that you have completed a General Chemistry I course but may not have taken any chemistry in high school. This course, and my First Semester General Chemistry course also available on Udemy, are ideal for anyone who needs to take General Chemistry at the college level but did not have it in high school. These courses are also well-suited for those who need to refresh their knowledge of General Chemistry before taking it at the college level.


Since chemistry is a quantitative science, a working knowledge of high school algebra is needed. In this course, you will also need to be familiar with logarithms and exponential functions. If your math skills are weak, this course will show you what types of math calculations are needed and you can hone those skills prior to your taking the course at a college level.


For this Udemy course, I used the Openstax Chemistry textbook which is also available in PDF format in the Resource Folder of the first lecture for this course. However, if you already have an old textbook, that may also work for you. Topics may be presented in somewhat different order, however.

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Instructor Details

Gregory Kowalczyk

Gregory Kowalczyk (Dr. K.) has a Ph. D. in Chemistry and is Professor Emeritus having taught Chemistry for 21 years at a public state university, much of which was General Chemistry. Prior to entering academe, he worked in the electric power industry for 20 years as an environmental analyst. Although he is not a professional baker, he has been making his own breads for 35 years. He lives with his wife, Jan, who is also a chemist and enjoys making bread.

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Reviews

4.6

177 ratings on Udemy

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By Maggie Bashar on 1/23/2026

i wish it had more practice

By Jim Hesson on 3/7/2025

Outstanding course! This course, along with the accompanying class, general chemistry 1, covers all the essential topics of general chemistry. I have compared these classes with other online classes for general chemistry, and this is by far the most economical option. The professor seems very experienced and knowledgeable, and his lectures are straightforward and comprehensible, including numerous practice example questions.

By Jose Juan Bautista on 12/28/2022

Thank you for creating this course.

By Quinton Oosthuizen on 11/21/2022

Clear and concise lectures that help a lot with university work.

By Priyanka Kalsi on 11/19/2022

Great lectures, presentations examples of numerical problems solving. With ample opportunities for recitation after lecture for complete synopsis and gist of lecture. Udemy courses are wonderful Learning experience.

By Mario Cinquina on 9/13/2022

This is a very good course for the autodidactic learner and polymath. I used a self teaching guide from Wiley's 2nd. edition. "A Self-Teaching Guide Chemistry Concepts & Problems by authors Houck and Post." This is a work-book with fill in exercises that follows short explanations. I found this greatly enhance this course because both complement each other. Also, found this to be an excellent review to my high-school and college days of chemistry courses. Lots of good resource material that goes along with each lesson. This professor is clear with his explanations and has a way of simplifying the material by where any beginner should be able to learn with little effort. Definitely a great choice.

By Richard Holder on 9/6/2022

He is a very good teacher of Chem. To modernise the course I would suggest using graphics and auto type as he goes along. The explanations and pace are fine it would just improve the presentation. I would also add test questions at the end of each section where relevant.

By Cullen Penny on 7/29/2022

Dr K is a brilliant lecturer. In fact, Dr K is a Chemistry Rock (Silicate) Star. The presentation is clear and extremely patiently and well explained. The link to the Openstax text book means that one can read the chapter first, knowing that Dr K will be there to clarify any areas of difficulty during his lecture. Often, Dr K explains concepts and sets them out better than the text book. I wish Dr K were able to lecture on Physics 1 too.

By Praveen Roy on 7/19/2022

I learned quite a lot from the First Semester Chemistry course, and am very appreciative of how thorough and informative the lectures provided by this instructor are! I am eager to jump into this course!

By Allan Blener Da Silva on 7/11/2022

Having a PhD at this level to teach you chemistry is having a 100% chance that you will learn. I have took both the first and second semester in General Chemistry, and this course is better than the chemistry course at my university. The next one of the list is Organic Chemistry, and i am looking forward to an analytical chemistry course.

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Overall Score : 92 / 100