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返回到 化学基础:反应和比率

學生對 杜克大学 提供的 化学基础:反应和比率 的評價和反饋

4.7
803 個評分
209 條評論

課程概述

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....

熱門審閱

RG
2020年8月19日

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.

NH
2020年6月12日

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 - 化学基础:反应和比率 的 200 個評論(共 205 個)

創建者 Gyanendra

2017年6月4日

Great!

創建者 ranjitha r

2021年1月7日

Good

創建者 M Z U M

2020年9月26日

Good

創建者 Simonas M

2020年9月26日

good

創建者 Dr. M B

2020年5月10日

good

創建者 Carlo T

2020年11月16日

Overall, the course is a very good introductory course. There are many great theoretical exercises and real-life examples to their discussions. I also like how they simplified the mole concept into an easily digestible one. However, at times, the course gives examples that students that are not yet acquainted with chemistry may have a hard time processing. It also discusses some concepts that are tied to some chemistry concepts that the course decided not to dabble with, e.g., using examples to show Lewis electron-dot notation and electron pairs but not thoroughly discussing how that works. Because of this, I would not recommend this to students that don't have any idea about chemistry, or to those that hadn't learned it in their secondary schools.

創建者 Josh F

2019年11月17日

On the whole this course was worth my time. I had never taken a chemistry class and I was looking for a course to prepare me for other science courses that required a background in basic chemistry. I found the course very easy and quick. All concepts were well explained, except those in week 6, where a plethora of new and basically unexplained notation (Lewis Dot models, chemical structure diagrams) made the lectures harder to follow. I expect that I will learn more about that notation in the second course.

創建者 nijitha k

2020年9月12日

It was a wonderful experience. All lectures were excellent. Simple and clear kind of lecturing it was very easy and interesting to follow. Sometimes i feel sad if my phone shows low battery power during the class time. I hope i could attend almost week exercises well. Demonstrations also very helpful. I spent time for getting better mark by repeating exams when ever my percentage become low. Special thanks to Prof. Dorian Canelas.

創建者 Rohan H

2018年8月9日

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.

創建者 Lucille G

2020年8月20日

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

創建者 Crystal Q T Z

2017年12月29日

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

創建者 Michael B

2017年2月18日

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

創建者 Sarah S

2019年11月12日

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

創建者 Casey D

2020年10月12日

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

創建者 Kyla M T D C

2020年10月17日

I gained a lot of knowledge with this course.

創建者 M L

2018年2月9日

It's a very good course and

clear teaching!

創建者 Amartya M

2020年10月28日

Great course for concept clearance

創建者 廷瑋 王

2017年7月17日

clear concept explanation

創建者 Habib U

2019年10月11日

helpful for the biginner

創建者 Dr. B D

2018年11月17日

I rather enjoyed it. :-)

創建者 Грязев В В

2016年12月16日

понятный и доступный

創建者 John F

2020年7月1日

a good introduction

創建者 Nafiul A

2020年6月17日

I loved this course

創建者 Eb E

2019年11月12日

Cool class!