Chevron Left
Back to Introduction to Chemistry: Reactions and Ratios

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

4.7
stars
1,374 ratings

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

IC

Jul 11, 2019

Excellent course. Although, it was very challenging to me to complete it and I had to repeat some of the videos, I am very happy that I decided to take it. It helped me to repeat my knowledge.

NM

Sep 14, 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.

Filter by:

201 - 225 of 347 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 G

•

Dec 27, 2017

Muy bueno para aprender la introducción a la química.

By Alicia G

•

Aug 6, 2021

super duper .............. chemistry lecture .......

By Omkar P

•

Oct 4, 2020

very understandable contents and excellent teaching

By Excerption E

•

Aug 2, 2020

Amazing Professor. She explains everything so good!

By Amira A

•

Aug 14, 2020

Important course with good and various information

By sadia s

•

Feb 7, 2025

It gives Conceptual clarity,Real-world relevance.

By kristell

•

Jul 10, 2019

the teacher is the best, also she is really funny

By Enrique F P

•

Jan 23, 2023

Very good. Teacher speaking very clear. 5 stars.

By Iram I

•

Oct 9, 2021

It was amazing to learn chemistry by this course

By Daniela M

•

Mar 19, 2022

Amazing teacher, super clear for beginners too!

By Lorena R

•

Dec 14, 2020

Excellent course, excellent teacher, thank you!

By Alexander S

•

Jul 3, 2021

Thank you for the efficient and useful course!

By Albert K

•

Jul 31, 2020

Thank you so much. This is excellent course

By JEMINA.I

•

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

•

May 1, 2020

The course was helpful and encouraging ...

By Liz C

•

Jun 20, 2017

Thanks Dr Canelas! You gave me confidence.

By Lot

•

Mar 11, 2021

Really great course. Fun and interactive!

By M

•

Oct 20, 2017

I learned something new. That was my goal

By Lekhana. A A

•

Mar 2, 2024

This course is both fun and informative

By Mohammad t d

•

Jul 4, 2020

the lessons are very useful and exciting

By Gayathry B

•

May 7, 2020

I'm really glad to joined in this course

By Proshanta R

•

Aug 24, 2020

I have learn about many unknown things

By Carlos A C A

•

Aug 20, 2020

Excellent! thanks for the opportunity!