Summary for Week 2

Reading:

For this week: BLB Chapter 2

A look ahead: BLB Chapter 3

RecommendedHomework problems from BLB:

Chapter 2: : 2, 6, 8, 10, 15, 17, 19, 21, 28, 78

OWL Assignment for Week 2:

Chapter 2 assignment on atomic structure: due September 23, 2007

Key concepts:

atomic theory

radioactivity: alpha, beta, and gamma rays

cathode rays are electrons

mass/charge ratio

charge on the electron (Millikan experiment)

Rutherford experiment

atomic structure: protons, neutrons, electrons

atomic number: Z

atomic weight and isotopes; relative average atomic mass ("atomic weight")

periodic table and group properties

law of definite proportions or law of constant composition

law of conservation of mass

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