Friday, September 24, 2010

Limitations of the Gas Laws

As part of our review, we need to recap and summarize the nature of gases and the kinetic-molecular theory of gases (KMT). Based upon the postulates of the KMT and the results of experiments with gases, the Gas Laws were developed - Boyle's Law, Gay-Lussac's Law, Charles' Law, Avogadro's Law, and Dalton's Law. From these laws, a powerful equation is derived: PV = nRT.

The concepts concerning gases are discussed in chapter 13 of the textbook.

HW: Using the textbook, summarize the six physical properties of gases; summarize the six postulates of the KMT; define the term postulate (pgs 417-423 of the textbook). Also, explain the limitations of the ideal gas law (pgs 444-445).

Thursday, September 16, 2010

Crushed Can Demo - That was crazy!

We completed the quiz for Unit 2 today! Tomorrow, we will be discussing the crushed can demonstration. Please complete a journal entry in which you attempt to explain your observations. Also, bring your journals to class tomorrow. I will be collecting them.

HW: Complete a journal entry for the crushed can demonstration - (1) draw an illustration of the demonstration, (2) write a short procedure, (3) describe your observations, and (4) write a conclusion and draw particle diagrams to explain.