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Opiniones y comentarios de aprendices correspondientes a Introduction to Chemistry: Reactions and Ratios por parte de Universidad Duke

928 calificaciones
251 reseña

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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....

Principales reseñas

19 de ago. de 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.

12 de jun. de 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.

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226 - 249 de 249 revisiones para Introduction to Chemistry: Reactions and Ratios

por Lucy G

20 de ago. de 2020

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

por Crystal Q T Z

29 de dic. de 2017

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

por Michael B

18 de feb. de 2017

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

por Sarah S

12 de nov. de 2019

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

por Martin L

13 de feb. de 2021

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

por Casey D

12 de oct. de 2020

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

por Kyla M T D C

17 de oct. de 2020

I gained a lot of knowledge with this course.

por M L

9 de feb. de 2018

It's a very good course and

clear teaching!


3 de abr. de 2021

Well explained course. Thank you.

por Amartya M

28 de oct. de 2020

Great course for concept clearance

por 廷瑋 王

17 de jul. de 2017

clear concept explanation

por Habib U

11 de oct. de 2019

helpful for the biginner

por Ben D

17 de nov. de 2018

I rather enjoyed it. :-)

por Грязев В В

16 de dic. de 2016

понятный и доступный

por John F

1 de jul. de 2020

a good introduction

por Nafiul A

17 de jun. de 2020

I loved this course

por Eb E

12 de nov. de 2019

Cool class!

por Nancy L

1 de may. de 2021

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

por mohammad o t

10 de mar. de 2021

Very long videos

por Armon A

25 de jul. de 2021

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

por Arkojyoti B

15 de dic. de 2020

The professor is superbly unengaging. Her toneless voice while she reads from a teleprompter and her desperate attempts to be funny makes one doze off fast. Her gaps make it so that she doesn't really know what she is doing (might be different n an actual class). This is not story time and you don not have to treat learners like pre-schoolers. Also the advanced question sets are bullshit- just cut to the chase already and go for the answers than giving points for "did you understand the question?". Well if I didn't I would get a wrong answer and know I made a mistake somewhere, so need for you to ask exactly what formulas I'm gonna use.

por Nicolás C M

14 de ago. de 2020

It say introduction, but it is more advanced that it seems

por Lacie C

7 de dic. de 2020

Too much at one time.