Chemistry Unit 10

Big Idea:

Address the principles of ideal gas behavior, kinetic molecular theory, and the conditions that influence the behavior of gases.

Student Expectations:

Priority TEKS

C.9(B) describe the postulates of kinetic molecular theory.

Focus TEKS

C.9(A) describe and calculate the relations between volume, pressure, number of moles, and temperature for an ideal gas as described by Boyle's law, Charles' law, Avogadro's law, Dalton's law of partial pressure, and the ideal gas law.

Ongoing TEKS

C.8(A) define and use the concept of a mole.

C.8(B) calculate the number of atoms or molecules in a sample of material using Avogadro's number.

C.8(G) perform stoichiometric calculations, including determination of mass and gas volume relationships between reactants and products and percent yield

C.2(B) know that scientific hypotheses are tentative and testable statements that must be capable of being supported or not supported by observational evidence. Hypotheses of durable explanatory power that have been tested over a wide variety of conditions are incorporated into theories

C.3(A) analyze, evaluate, and critique scientific explanations by using empirical evidence, logical reasoning, and experimental and observational testing, so as to encourage critical thinking by the student

C.3(F) describe the history of chemistry and contributions of scientists

Student Learning Targets:

• I will define gas pressure and know the units for its measurement
• I will know the definition and values of Standard Temperature and Pressure.
• I will be able to state and apply the following gas laws:
  • Boyle’s law: P1V1=P2V2
  • Charles Law: V1/T1=V2/T2
  • Combined Gas Law: P1V1/T1=P2V2/T2
  • Avogadro’s law: V1/n1=V2/n2
  • Ideal Gas law: PV=nRT
• I will solve stoichiometric problems that involve gas volumes.
• I will use Dalton’s law to relate partial pressure and mole fractions Pt=P1 + P2 + P3 + ….
• I will interconvert chemical quantities between the mass, moles, number of particles and liters of gas STP.
• I will discuss Kinetic Molecular Theory and how it relates to the behavior of gases.
• I will interpret the five postulates of the Kinetic Molecular Theory
• I will differentiate between an ideal and a real gas

Essential Questions:

• In what ways are the properties of ideal gases related?
• In what ways are the properties of ideal gases calculated?
• How does kinetic molecular theory explain the behavior of ideal gas systems?

Extra Information:

Adopted Textbook: Chemistry, Pearson

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