Learner Reviews & Feedback for Introduction to Chemistry: Reactions and Ratios by Duke University
About the Course
Top reviews
NM
Sep 13, 2025
Excellent course!!! I enjoyed the historical background the lecturer used including the brief synopsis of the Chinese emperor consuming mercury pills to gain immortality.
NH
Jun 12, 2020
It is a wonderful course for Middle school students. A first course in Chemistry, for the gifted students who will do AP Chemistry. Not suitable for adult learners who need an advanced introduction.
126 - 150 of 336 Reviews for Introduction to Chemistry: Reactions and Ratios
By Thomas B
•Jan 18, 2024
Loved the course - thought it was too easy at first but it was just about right for a refresher. On to more chemistry!
By Mary A T C
•Aug 8, 2020
I learned a lot in this course which is very applicable in online learning. It refreshes my knowledge on the subject.
By Nimisha N
•May 24, 2020
I really loved the coursera course so very much. Prof.Dorian really did a great job. She taught all concepts so well.
By Sakshi T
•Sep 23, 2020
Thank you so much for this amazing course and thank you to professor because of her I was able to complete my course
By Kyle S
•May 6, 2020
I learned a lot from this course that I haven't understood at all when it was taught at our school. I like it.
By Extreme S H F
•Mar 16, 2021
I learn a lot from this course.Thanks to professor's instructions. My knowledge of chemistry becomes better.
By Jorge L B A
•Dec 9, 2017
Excelente curso. Gracias al mismo, he logrado comprender algunas cosas que no había entendido en pregrado.
By Deleted A
•Jan 9, 2021
One of the best professors I have ever had. Lectures are easy to understand. Instruction is methodical.
By Anna
•May 5, 2021
Excellent course! Dorian Canelas is a wonderful professor with an inspiring enthusiasm for chemistry!
By Aaditya M
•Apr 10, 2020
a good recap on stoichometric coefficients and a good method to prepare fo university level chemistry
By Yotam S
•Apr 20, 2025
A nice introduction to chemistry. Lightweight (finished over one weekend), fun, and super engaging.
By Karl R
•Aug 8, 2020
Highly Educational! Thumbs up. I just feel insufficient about the redox calculation but it is okay!
By Tyler H
•Sep 8, 2024
Excellent teacher and great intro to chem. Way more accessible than when I took it in high school!
By Deleted A
•Jul 7, 2020
Very good introduction chemistry course! Hope new and more advanced courses will follow this one!
By Liang Z
•Aug 5, 2020
Wonderful Lesson. The knowledge from this course really help me prepare for the AP chemistry.
By Hangkyo L
•Jun 23, 2020
Great teacher! Lots of examples, timely quizzes, easy but specific explanations. Thank you!
By Julia H M
•Aug 3, 2020
It made me believe I could do it! Love your explanations with real life examples! Thank you!
By Rachana S
•May 28, 2020
Thank you so much, mam. It was worth of time. Got to revise the basic concepts of chemistry.
By Santiago T
•Feb 1, 2023
Amazing course for those with little or no knowledge of chemistry. I highly recommend it!
By Yerkanat K
•Feb 26, 2018
Professor is really good at explaining the things! I find this course awesome for starters
By Angel E
•Jun 29, 2021
Curso muy interesante, práctico y didáctico. Fácil manejo de la web y contenido adecuado.
By Ginny H
•Nov 26, 2019
I am enjoying the course, and it has been challenging; but that is what I am looking for.
By Alfonso M
•Nov 18, 2016
Thank you Dorian, I have learned a lot on the basics of chemistry and chemical reactions
By Alex K
•Apr 27, 2020
Very good exercises! Nice balance between lectures and assignments. Excellent course!