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

4.7
stars
1,188 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

RG

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.

M

Sep 4, 2023

The teaching method of Dr. Dorian canelas was very simple and impressive. I have learnt a lot and much enjoyed during the lecture and Practical demonstration. I recommend it to all chemistry learner.

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276 - 300 of 303 Reviews for Introduction to Chemistry: Reactions and Ratios

By Rohan H

Aug 9, 2018

Quality course. Very basic in material but fabulous to understand nomenclature and other technical necessities. I used it to prepare for a honors chemistry course I am taking in my sophomore year of high school. It, in my opinion, is perfect for that use.

By Johanán B A P M

Aug 30, 2023

Le doy 4 estrellas,bien explciado pero por motivos de mi establecimiento debi temrinarlo rapido no logre hacer los demas ejercicios con honores y aparte mu buena explicacion para retroaliementar los temas vistos

By Lucille G

Aug 20, 2020

helpful course, but advanced problem sets are sometimes much more difficult than concepts shown in video sessions

By Crystal Q T Z

Dec 29, 2017

Clear explanations and an excellent course for beginners. Very slow to begin, but informative and thorough.

By Michael B

Feb 18, 2017

There were some errors in the video playback, one entire lesson near the end seemed like it was skipped.

By Sarah S

Nov 12, 2019

I wish more time was spent going over the mathematical equations and more examples were given.

By Martin L

Feb 13, 2021

The video lectures taught you how to pass the tests and didn't really teach anything well.

By Casey D

Oct 12, 2020

Great review for those who need refreshers and good for newcomers to chemistry!

By David A R

Mar 23, 2023

Good explanations, actiivities and experimental examples.

By Kyla M T D C

Oct 17, 2020

I gained a lot of knowledge with this course.

By M L

Feb 9, 2018

It's a very good course and

clear teaching!

By JESSIE C

Apr 3, 2021

Well explained course. Thank you.

By Amartya M

Oct 28, 2020

Great course for concept clearance

By 王廷瑋

Jul 17, 2017

clear concept explanation

By Ullah H

Oct 11, 2019

helpful for the biginner

By Ben D

Nov 17, 2018

I rather enjoyed it. :-)

By Грязев В В

Dec 16, 2016

понятный и доступный

By John F

Jul 1, 2020

a good introduction

By Nafiul A

Jun 17, 2020

I loved this course

By Eb E

Nov 12, 2019

Cool class!

By Nicholas F

Sep 18, 2022

good

By Nancy L

May 1, 2021

I've found easier tutorials on YouTube for certain subjects but I really enjoyed the demos!

By mohammad o t

Mar 10, 2021

Very long videos

By Armon A

Jul 25, 2021

The lectures were difficult to follow, and the material on the tests were not covered well.