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Text Comments (27)

1 answer

Last reply by: Alex Bell
Sun Aug 24, 2014 6:25 PM

Post by sasank v on October 12, 2013

Can you explain the difference between steam and water vapour again in a written format?

0 answers

Post by Marian Iskandar on April 14, 2013

Such an excellent teacher! :)

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Post by Sarawut Chaiyadech on February 9, 2013

Respect a lot sir!

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Post by Edward Hook on February 3, 2013

Yes, nice lecture!

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Post by Irina Tokar on December 23, 2012

Love this, simple and clear.

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Post by Chander Dhawan on October 10, 2012

I wish he was my normal teacher.

Great teaching.

2 answers

Last reply by: Joshua Chung
Sat Sep 29, 2012 2:55 AM

Post by Linh La on August 28, 2012

Why is air a homogeneous mixture? It has different properties.

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Post by Jacob Mack on August 4, 2012

Yes Bill they are the same.

1 answer

Last reply by: Ma. Louiegine Janaban
Mon Feb 11, 2013 3:06 PM

Post by Bill Kennedy on June 22, 2012

Is a change of state and a change of phase the same thing?

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Post by emmanuel arthur on May 30, 2012

thanks prof...you saved me a lot of time behind the stupid text books.

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Post by Valtio Cooper on December 4, 2011

your wonderful sir

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Post by Abdul Khalid on June 5, 2011

he reminds me of ducky from ncis!!

3 answers

Last reply by: stephen legge
Wed Feb 20, 2013 6:42 PM

Post by Vasilios Sahinidis on December 28, 2010

Sorry...isn't this lecture supposed to be a bit longer? I believe Professor Goldwhite was in the middle of a sentence when the video abruptly ended.

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Post by Joseph Priestley on October 26, 2010

Very good teaching pace.

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Post by Mohammed Jaweed on September 3, 2010

Loved the vidEO

way better than stupid public school teacher who waste students time

1 answer

Last reply by: Nagayasu Toshitatsu
Mon Jul 30, 2012 8:33 AM

Post by Laronda Johnson on August 20, 2010

great teaching

0 answers

Post by Atiq Allah on August 11, 2010

Very well presented and a concise video.Surely saves substantial amounts of time than a dull textbooks.

1 answer

Last reply by: Zachary McCoy
Fri Jan 3, 2014 10:34 PM

Post by Timothy miranda on April 28, 2010

watched the 2 minutes of the video. He seems like a great professor. Later this year I'm definitely going to sit and listen to each of his lectures on this topic.

Introduction to Chemistry

  • Which sciences are closely related to chemistry

  • Learn the most important physical changes; contrast them with chemical changes

  • Definitions: Heterogeneous and homogeneous materials

  • Definitions: Pure substances: compounds and elements

Introduction to Chemistry

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.