CHAD'S PREP

Taking the Stress Out of Learning Science

Chad's Videos--Free, No Sign-up Required

Chad's General Chemistry Videos

Free

  • Comprehensive Video Lectures (21 Chapters)
  • Covers 1 Full Year of General Chemistry
  • No sign-up required

Chad's Organic Chemistry Videos

Free

  • Comprehensive Video Lectures (21 Chapters)
  • Covers 1 Full Year of Organic Chemistry
  • No sign-up required

Chad's General Physics Videos

Free

  • Comprehensive Video Lectures (21 Chapters)
  • Covers 1 Full Year of General Physics
  • No sign-up required

Chad's Elementary Physical Chemistry Videos

Free

  • Comprehensive Video Lectures (9 Chapters)
  • Covers 1 Semester of Thermodynamics
  • No sign-up required

Chad's Elementary Biochemistry Videos

Free

  • Comprehensive Video Lectures (12 Chapters)
  • Covers a 1 Semester Survey Course of Biochemistry
  • No sign-up required

NEW!

Practice Exam Course Card

Check out Chad's new DAT and OAT practice exams!

FREE for a limited time!

Chad's DAT Practice Exams

Free

Chad's OAT Practice Exams

Free

Bio Pic for Chad's Prep Homepage-min

I have been helping science and pre-health students excel for more than two decades.  I have spent most of the last 15 years managing the tutoring facility for the Chemistry department at one of the largest universities in the country and continue to work there to this day.  I help thousands of students in person in large groups, in small groups, and one-on-one every semester and this site is my attempt to help far more. 

Chemistry and Physics are not as difficult as you think...I promise!  Try one of my FREE or premium courses today!  Happy Studying!   -Chad

Chad's Videos

Chad's video lectures are designed to present the subject material in as simple a manner as possible.  His incorporation of humor and analogy makes even complex topics both understandable and memorable.

chads videos sample video
chads videos sample quiz

Practice, Practice, Practice

Practice is the most important component in mastering a topic. This is why Chad has constructed quizzes with a progression from easier to more difficult, and from common examples to important exceptions.  This builds comprehensive knowledge of a subject step-by-step and maximizes learning and retention.

Outlines and Cheat Sheets

Comprehensive outlines are provided to facilitate note-taking.  Cheat sheets and summaries are also available for many courses.

Chads Videos Sample Outlines

Chad's Videos Testimonials

Life Saver

Logan A.

I stumbled on Chad's videos while taking general chemistry 1 in a very competitive STEM program that was structured as a "flipped classroom". I cried many tears over my grades and over the fact that I was not able to teach myself material that was coming so easily to others. Enter: Chad's Videos. My life, and my grade, will never be the same. Watching Chad's videos reinforced what I had already learned, and also taught me so many clever and helpful tips and ways of remembering crucial and complicated information. I actually have grown to somewhat enjoy chemistry at this point. Nothing but good things to say about this platform. Thank you Chad!

You have to do this!

Jackie E.

Chad's videos have helped me so much during my Chem 2 course. It's been a few years since I have taken chem 1 and I don't remember anything. Watching these videos before class and following along in class has improved my understanding tremendously. I love that I can always go back and review however many times that I need before a test or even before the final. Thank you Chad!!

The best Chem/Physics videos on the internet

Eyad H.

I watched Chad's videos while taking my Physics courses and he was a huge help! Currently using his videos for my General Chemistry course and could not expect anything better. I've used many different online video resources and Chad's videos are consistently the gold standard for online video explanations. The best part is that they're free and I'm definitely planning to continue using in the future and will buy the packages because his work is worth supporting. The benefit you get is very much worth it. Thanks Chad!!

Phenomenal!

Colton N.

Chad's videos were so much more helpful than I expected. His teaching style works really well for me. I'm extremely grateful I decided to use this for help in my courses.

Very helpful!

Emma F.

I have found Chad's Videos to be incredibly helpful. Chad gets right to the point and is concise in his explanations. He also adds in jokes and tips along the way to help you remember certain concepts. These videos have been a lifesaver!! Thank you Chad!

Review of Chad's Videos

Shannon Y.

For me, these chemistry videos gave me the confidence and joy in learning chemistry for the first time. Chemistry was always that subject that I just kind of dodged. Somehow I was never able to understand the chemistry taught to me in high school and college four years ago. I got so frustrated with just memorizing things and not understand a single thing about what was actually going on. Learning from Chad has got to be one of the best decisions I have made, as he has turned this subject into something I am looking forward to learning about and teaching me foundations that have been long overdue. I am not one with the videos yet, but I have to say they are truly wonderful.
-Shannon

Excellent Review of concepts, with examples!

Roxanna P.

I Love watching Chad's videos. His lectures have been instrumental in re-learning chemistry concepts that I've long forgotten! I especially enjoy how he relates the content with realistic scenarios so that I can understand the content better. The quizzes at the end of each section really help cement the content in. It's even more helpful when the explanation, along with a video is provided for each right or wrong answer.
I am extremely grateful and thankful that he not only takes the time to make these videos, but he does it in such a way that it's easier to learn and/or recount past teachings. I highly recommend his videos to anyone and everyone needing refresher's for hard chemistry subjects or for those who want to gain a better understanding of content learned.
Thank you so much! You're heaven sent!!!

great review

Cynthia G.

I am so glad Chad's videos exist! They are so helpful and he does an extremely amazing job at teaching you everything you need to know to survive general chemistry.

the best help with gen chem and ochem!

Nicole J.

I've been out of school for 4 years and I even used Chad's videos while studying in school but this is the easiest way to learn chemistry!

Great Resource!

Christine S.

Chad's videos have helped me grasp some challenging chemistry topics in words that I can understand and with relatable analogies. I'm so thankful that a fellow classmate told me about Chad.

Amazing

Onalee S.

I learned more from watching Chad's videos and doing his review quizzes than I ever have from other review sites/ books. He explains things in such a way that they just "click."

This course is an epitome of excellence.

Kyle B.

I have been using Chad Videos for over a year and they are spectacular when it comes to understanding mechanisms and IUPAC. The videos are coherent, and concise.

It was the best!

Samuel G.

Chad's Organic Chemistry Review is absolutely the best!! Chad explains complex topics very clearly and concisely and he's honestly the best teacher ever!! His study guides for reactions are really clear and his slides help you follow along, take notes, and learn while watching the videos. I would never have done well on any Orgo test without him teaching me the material, because he is a so much better teacher than my college professors! Plus I love his quizzes which help you further master the material! Chad the only request I have if for you to please have quizzes in your Biochemistry course when I take Biochem next year!

An Answer to my prayers...

Ursula H.

Chad is the best instructor! As a non-traditional student I love this course! He helps me understand in a way that the university professors could never! These courses are truly an answer to my prayers! Chad is awesome!

Organic Chemistry

Andreea N.

Hi! Just wanted to say thank you, Chad! You are amazing, you make organic chemistry easier and enjoyable! You are a life saver!!! Words can`t describe how grateful I am for you! God bless you!!

USE CHAD TO GET AN A+

Husban S.

Hey guys, so I found out about chad a few years ago when i was in high school and trying to get ahead. I used his videos for him to explain concepts and problems i could never understand in class. Now I am currently taking Organic chemistry and I havent been to class in over a month or two and only watch Chads videos and i still get almost perfect scores on the test. Chad is great. USE his videos and take notes.

Amazing

Aida R.

I owe it all to you Chad! the material is explained so so well! I love watching these videos before going to lecture as well as watching them to clear up a lot of the concepts covered in the textbook assigned to me.

Helped me pass Chemistry

Clark W.

Chad is by far the best teacher I've met for Chemistry. He takes complicated material and explains them in funny and simple ways so that they can be easily understood. In Chad's Ultimate Organic Chemistry Review it's nicely set up so that you can pick the area that you may be struggling with and watch awesome videos that clearly explain and teach the material better than any teacher I've ever had could. After the videos there are helpful quizzes for practice with explanations for why the correct answer is what it is. If you need help in just about any portion of Chemistry, there is no better choice than Chad.

Chad is saving my chem courses!

Tabby S.

I just want to say thank you, because this course is the only thing that I needed for my ochem course!

The best preparation course

Amy A.

I think he is the best aspect of the course. The lectures were well-organized and clearly presented. Chad's Ultimate Organic Chemistry course is the most necessary and beneficial to students who wants to do well in the subject of Organic Chemistry.

So helpful to understand concepts!

Regan H.

Chad's videos have really helped me understand physics concepts. Chad explains concepts in a clear and engaging manner. He makes learning physics bearable! I really appreciate your videos Chad. Thank you!

Best way to study Physics!

Jumee P.

I've been using chad's videos (including general chem, orgo for ACS, and biochemistry), and those videos are saving my life!

Chad's Ultimate General Physics Review

A C

I really like this course so far! The videos really allow me to learn at my own pace, and the practice problems relate pretty well to the videos. The explanations to the quiz problems are also clear. I also like how fast the feedback is with discussion questions. I do wish the numbers in quiz problems changed values a little between retakes, because sometimes I'm not sure if I'm understanding the problem better or just memorizing the answer. Overall, a great learning resource.

Helped me ace university physics

Dennis G.

Chad does a great job on making you understand all concepts especially with his use of various examples. His explanations are short and to the point which is why I enjoy his teaching methods.

Excellent videos

Lucas S.

Chad is wonderful at simplifying the material in a way that is easy to digest. You are the man Chad!

Chad has saved my life

Kaleen K.

i hope chad never stops his videos because i don't think i can make it to medical school without him! thank you so much! you have truly made the journey to medical school a bit easier.

Great Course! Better than University Lectures

Maya C.

Chad's videos are amazing and walk through material fluidly, interconnecting different concepts to increase your understanding.

Chad for the win

Shad M.

Chad's videos saved my grade in general college physics! My professor at school was super hard to follow. So along with going to class I watched these videos for each chapter. Chad explains the concepts in a way that I understand. He also works through sample problems for each section of each chapter which is super helpful. I definitely recommend using his videos to study.

Awesome videos!

Alyssa N.

I have done chads videos for general chemistry, organic chemistry and now physics. It has been a huge help in getting a little extra help in understanding the material! Thanks Chad I recommend your videos to everyone!

Great help!

MJ R.

Thank you Chad for these easy to follow and well explained videos. I only went through the first 5 chapters but it has been amazing so far. Explanations have been concise making sure the videos aren't too long so it is easy to keep focused

General Chemistry Made Easy!

Periodic-Table-2018-for-homepage

Chad covers a full year of General Chemistry (21 chapters).  Humor, analogies, and mnemonics are all incorporated to make General Chemistry both memorable and fun! Free and Premium courses are available.

Organic Chemistry Made Easy!

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Chad covers a full year of Organic Chemistry (22 chapters) in less than 24 hours.  Chad makes the fundamentals of chemical reactivity a priority so that students truly UNDERSTAND Organic Chemistry.  Free and Premium courses are available.

General Physics Made Easy!

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Chad covers a full year of General Physics(25 chapters).  From Mechanics, to Electricity and Magnetism, to Optics, Chad breaks Physics down like no one else! Free and Premium courses are available.

Fun Facts

Videos

And more videos are being added all the time!

Quiz Questions

And more are being added all the time!

Students

17,866 students studied using our courses in 2018.

Courses

Chad's DAT/OAT Practice Exams

Chad's DAT Practice Exams

Free (for a limited time)

  • 5 General Chemistry Practice Exams
  • 5 Organic Chemistry Practice Exams
  • 5 Biology Practice Exams
  • 5 Quantitative Reasoning Practice Exams
  • Screen-recorded Solutions

Chad's OAT Practice Exams

Free (for a limited time)

  • 5 General Chemistry Practice Exams
  • 5 Organic Chemistry Practice Exams
  • 5 Biology Practice Exams
  • 5 Quantitative Reasoning Practice Exams
  • Physics Practice Exams are Coming Soon!
  • Screen-recorded Solutions

Ultimate Bundle

Studying for multiple courses?  Save BIG with the Ultimate Bundle!

1-month Subscription

$11.99 /month (recurring)

  • Includes All of the Following:
  • Chad's Ultimate General Chemistry Course
  • Chad's Ultimate Organic Chemistry Course
  • Chad's Ultimate General Physics Course
  • Chad's Elementary Biochemistry
  • Chad's Elementary Physical Chemistry
  • Chad's Organic Refresher for the ACS Standardized Final Exam

6-month Subscription

$50 (non-recurring)

  • Includes All of the Following:
  • Chad's Ultimate General Chemistry Course
  • Chad's Ultimate Organic Chemistry Course
  • Chad's Ultimate General Physics Course
  • Chad's Elementary Biochemistry
  • Chad's Elementary Physical Chemistry
  • Chad's Organic Refresher for the ACS Standardized Final Exam

1-Year Subscription

$80 (non-recurring)

  • Includes All of the Following:
  • Chad's Ultimate General Chemistry Course
  • Chad's Ultimate Organic Chemistry Course
  • Chad's Ultimate General Physics Course
  • Chad's Elementary Biochemistry
  • Chad's Elementary Physical Chemistry
  • Chad's Organic Refresher for the ACS Standardized Final Exam

General Chemistry

Chad's General Chemistry Videos

Free

  • Comprehensive Video Lectures (21 Chapters)
  • Covers 1 Full Year of General Chemistry
  • No sign-up required

Chad's Ultimate General Chemistry Review

$9.99 /month (recurring)

  • Comprehensive Video Lectures (21 Chapters)
  • Covers 1 Full Year of General Chemistry
  • Expanded Outlines (70 Pages)
  • 90 Practice Quizzes
  • 3 Practice Final Exams
  • Video Quiz Solutions
  • Over 1200 Practice Questions
  • In-Lesson Discussions

Organic Chemistry

Chad's Organic Chemistry Videos

Free

  • Comprehensive Video Lectures (22 Chapters)
  • Covers Two Semesters of Organic Chemistry
  • No sign-up required

Chad's Ultimate Organic Chemistry Review

$9.99 / month (recurring)

  • Comprehensive Video Lectures (22 Chapters)
  • Covers Two Semesters of Organic Chemistry
  • Comprehensive Outlines (160 Pages)
  • Complete Summary of Organic Reactions
  • 60 Practice Quizzes
  • 3 Practice Final Exams
  • Video Quiz Solutions
  • Over 800 Practice Questions
  • In-Lesson Discussions

Chad's Organic Refresher for the ACS Final Exam

$9.99 /month (recurring)

  • Comphensive Video Lectures (15 Chapters)
  • Comprehensive Outlines (60 Pages)
  • Complete Summary of Organic Reactions
  • Practice Quizzes
  • Practice Final Exams
  • Video Quiz Solutions
  • In-Lesson Discussions

General Physics

Chad's General Physics Videos

Free

  • Comprehensive Video Lectures (25 Chapters)
  • Covers 1 Full Year of General Physics
  • No sign-up required

Chad's Ultimate General Physics Review

$9.99 /month (recurring)

  • Comprehensive Video Lectures (25 Chapters)
  • Covers 1 Full Year of General Physics
  • Expanded Outlines (80 Pages)
  • Physics Equations Cheat Sheet
  • Practice Quizzes
  • In-Lesson Discussions

Other Courses

Elementary Biochemistry

Free

  • 1 Semester Survey Course
  • Video Lectures (12 Chapters)

Elementary Physical Chemistry

Free

  • 1 Semester Survey Course (Thermodynamics)
  • Video Lectures (9 Chapters)

"I Love watching Chad's videos. His lectures have been instrumental in re-learning chemistry concepts that I've long forgotten! I especially enjoy how he relates the content with realistic scenarios so that I can understand the content better. The quizzes at the end of each section really help cement the content in. It's even more helpful when the explanation, along with a video is provided for each right or wrong answer. I am extremely grateful and thankful that he not only takes the time to make these videos, but he does it in such a way that it's easier to learn and/or recount past teachings. I highly recommend his videos to anyone and everyone needing refresher's for hard chemistry subjects or for those who want to gain a better understanding of content learned. Thank you so much! You're heaven sent!!!"

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Ready to Ace

Chemistry and Physics?