Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

Monthly Update sign up
Mailing List signup
Reactions in Chemistry
HomeSupport MaterialsActivities
Sub Image2:Macro to Micro Structures
1) Atoms and Molecules2) Macro to Micro Structures
3) Energetics and Dynamics4) Theory and Practice in Chemical Systems5) Chemical Design6) The Chemistry of Life7) Chemistry and the Environment8) Chemistry at the Interface

Unit 2.3 Quantifying
This unit emphasizes the importance of the relationship between macro and micro, and deals with understanding the properties of matter through observation and calculation.
Video program cues: 14:05-23:20

Diluting color demonstration and activity

Pernell Williams conducts an activity about the relationship between concentration and color.



Using Chemistry and Color To Analyze Household Products: A 10-12 Hour Laboratory Project at the General Chemistry Level Journal of Chemical Education, Vol. 75 pp: 214-215.

Math in chemistry

“I was thinking, as we were having this discussion about getting students to understand things that they can’t see, that historically, teaching students chemistry in high schools and universities involved having them do lots of calculations about things that they cannot see. You have a couple of problems there [in teaching chemistry]. One, is the things [the students] can’t see, and two, it’s the first time that they really have to deal with a quantitative science. And when you combine the two — trying to do math involving things they can’t see, this adds an extra dimension of difficulty in trying to come up with models which can help them correctly visualize what’s going on.”

Dr. Leslie Pierce
Thomas A. Edison High School, Virginia


  • A Java applet about Beers Law, which relates the absorbency of a solution and its concentration. May be used with more advanced students.
Proceed to Unit 2.4 arrow

© Annenberg Foundation 2017. All rights reserved. Legal Policy