Lo 3 The student is able to select and apply mathematical relationships to mass data in order to justify a claim regarding the identify and/or estimated purity of a substance. (Sec 5, 7) lo 3

AP Learning Objectives, Margin Notes and References

• Learning Objectives
• LO 2.4 The student is able to use KMT and concepts of intermolecular forces to make predictions about the macroscopic properties of gases, including both ideal and nonideal behavior.
• LO 2.6 The student can apply mathematical relationships or estimation to determine macroscopic variables for ideal gases.

Why study gases?

• An understanding of real world phenomena.
• An understanding of how science “works.”

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A Gas

• Uniformly fills any container.
• Easily compressed.
• Mixes completely with any other gas.
• Exerts pressure on its surroundings.

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Pressure

• SI units = Newton/meter2 = 1 Pascal (Pa)
• 1 standard atmosphere = 101,325 Pa
• 1 standard atmosphere = 1 atm = 760 mm Hg = 760 torr

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