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

4.7
stars
1,386 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

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.

MR

Aug 8, 2019

An exceptional course to revise previous concepts. many a times strengthened my previously vague concepts. The interviews and especially the practical videos were very enlightening.

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226 - 250 of 350 Reviews for Introduction to Chemistry: Reactions and Ratios

By Mohammad t d

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Jul 4, 2020

the lessons are very useful and exciting

By Gayathry B

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May 7, 2020

I'm really glad to joined in this course

By Proshanta R

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Aug 23, 2020

I have learn about many unknown things

By Carlos A C A

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Aug 19, 2020

Excellent! thanks for the opportunity!

By Ong C W

•

May 9, 2020

Good course for

High School Chemistry

By Deleted A

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Jun 21, 2020

Really good course! I learned a lot!

By Yousef A

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Jun 20, 2020

a very fruitful course of chemistry.

By Abay P A

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Oct 10, 2024

Good and very nice and work it easy

By Natalia F

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Nov 14, 2023

Great and useful course, thank you!

By Sherry H

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Mar 24, 2019

Very informative and great teacher!

By Alfonso O

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Apr 20, 2017

Great class! Absolutely enjoyable!!

By Marionel E

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Sep 23, 2020

A good course, easy to understand.

By Yoe

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Apr 18, 2017

nice chemical course for beginners

By Bryan S

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Jul 17, 2021

Alot of work but this was great!

By Fernando D G

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May 5, 2020

Great Teacher, Explains excellent

By SeonMi J

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May 21, 2020

I enjoyed this course very much.

By zoha a

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Jul 9, 2021

This course was greatly helpful

By Luz A A V

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Feb 6, 2021

Muy buen curso. Bien explicado.

By Farsana. O P

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Jun 14, 2020

Nice presentation. Very helpful

By Rodrigo N

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Jun 27, 2025

Great professor, learned a lot

By HanMin Z

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Oct 24, 2021

A basic course but beneficial.

By Eduardo A C

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Dec 29, 2017

AMAZING! I HAVE LEARNED A LOT!

By Muhammad N A

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Apr 6, 2025

this course is really awesome

By A D

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May 28, 2020

really cleared up the basics!

By Kessia D R

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Feb 2, 2026

Very good course and helpful