Tuesday, February 19: Periods 1,2,4,5

Chem I: Periods 1, 4, and 5 (Chem I Block I):

1. Papers back, grades

2. Go over the test (take notes on it if you like)

3. Go over "What To Take After Chem I"

4. Notes and Demo: The Mystery of the Gaps

Con Chem : Period 2 (Con Chem Block I)

1. Grades

2. Starting Chemical Reactions: Balancing Equations

• Short notes: the goal and the rules

• Demo: burning Na

• At your lab tables: burning methane (balance it),

zinc in HCl (balance it), light the hydrogen gas (balance it),

aluminum power in the bunsen burner (balance it)

3. Worksheet CC30: Intro to balancing (work together in class)

4. Polyatomic Ions and the Five again - do together in class, turn in

5. Worksheet CC31: Balancing the polyatomic ions (do about half)

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