Chevron Left
Back to Introduction to Chemistry: Reactions and Ratios

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

542 ratings
143 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


Jun 13, 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.


Feb 06, 2018

Great Beginner Course. There are some parts where there will be frustration, but the forums are helpful. Any type of class involving math and science involves practice and work. Professor is great!

Filter by:

76 - 100 of 140 Reviews for Introduction to Chemistry: Reactions and Ratios

By Prashant K M

Apr 11, 2018

It was a very interesting course. I enjoyed it a lot!

By Jose C

Dec 27, 2017

Muy bueno para aprender la introducción a la química.

By kristell

Jul 10, 2019

the teacher is the best, also she is really funny


Jun 15, 2020

This course has helped to refresh my basics

By Afsar u D

May 13, 2020

it is excellent course for basic chemistry

By Dr. S J M

Apr 30, 2020

The course was helpful and encouraging ...

By Liz C

Jun 19, 2017

Thanks Dr Canelas! You gave me confidence.

By Mauritius X

Oct 20, 2017

I learned something new. That was my goal

By Mohammad t d

Jul 04, 2020

the lessons are very useful and exciting

By Gayathry B

May 07, 2020

I'm really glad to joined in this course

By Ong C W

May 09, 2020

Good course for

High School Chemistry

By Aline M d O

Jun 21, 2020

Really good course! I learned a lot!

By Yousef A

Jun 20, 2020

a very fruitful course of chemistry.

By Sherry H

Mar 24, 2019

Very informative and great teacher!

By Alfonso O

Apr 20, 2017

Great class! Absolutely enjoyable!!

By Yoe

Apr 18, 2017

nice chemical course for beginners

By Fernando D G

May 05, 2020

Great Teacher, Explains excellent

By SeonMi J

May 21, 2020

I enjoyed this course very much.

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 Johan L

Jan 28, 2017

I only wish there was more.

By Francisco J

Jan 22, 2019

muy bueno y bien explicado

By Sarah J

Jan 03, 2017

Very clear and accessible!

By Yumna N

Jun 02, 2020

Excellent demonstration👍