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Learner Reviews & Feedback for Introduction to Chemistry: Reactions and Ratios by Duke University

928 ratings
251 reviews

About the Course

This is an introductory course for students with limited background in chemistry; basic concepts involved in chemical reactions, stoichiometry, the periodic table, periodic trends, nomenclature, and chemical problem solving will be emphasized with the goal of preparing students for further study in chemistry as needed for many science, health, and policy professions....

Top reviews

Aug 19, 2020

Thank you Professor Dorian A. Canelas! It made me much more easier to understand the basic principles of chemistry and it builds me a lot of confidence in answering some of the problems in chemistry.

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.

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176 - 200 of 249 Reviews for Introduction to Chemistry: Reactions and Ratios

By Farsana. O P

Jun 14, 2020

Nice presentation. Very helpful

By Eduardo A C

Dec 29, 2017


By anwesha d

May 28, 2020

really cleared up the basics!

By Johanna H

Jan 28, 2017

I only wish there was more.

By Bassel A H

Jan 9, 2021

Great course and teacher !

By Francisco J

Jan 22, 2019

muy bueno y bien explicado

By Sarah J

Jan 2, 2017

Very clear and accessible!

By Yumna N

Jun 2, 2020

Excellent demonstration👍

By Sudhakar S K

Dec 31, 2019

good course for beginners

By Milan D

Jun 1, 2020

Very interesting course.

By Labib U

Apr 20, 2020

thanks. i am very happy

By Rasha D

Mar 17, 2018

thank you very much :)

By Абжалов Р Р

Dec 3, 2016

Very professional!!!

By Simona E B

Aug 23, 2021

Excellent approach!

By Tyus W

Jul 20, 2020

This was GREAT!!!

By Dr M R K

May 14, 2020

great experience

By Christhian P S

Nov 4, 2018

Thanks a lot!!!

By Matthew S

Aug 3, 2021

amazing course

By Camila G

Sep 21, 2020

Ótimo curso!!

By Nguyễn Q A

Apr 22, 2020

pretty useful

By Isaac C

Jun 6, 2019


By Marie J A

Jun 9, 2017

amazing tutor

By Ms S

Jun 12, 2021

very helpful

By Łukasz K

Aug 29, 2019

Very useful!


Jul 20, 2019