Block Day Date: 9/26/07 Date: 9/27/07

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Block DayDate 9/26/07Date 9/27/07

• Question to Ponder
• Valence electrons are the ones that react. How
  does this allow you to predict a reaction?

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Agenda

• What are we learning today
• Students will know that the periodic table has
  trends.
• How are we learning this
• Students will be able to perform a laboratory
  experiment that will show trends within the
  periodic table.
• Students will be able to balance chemical
  reactions from a worksheet.
• Why is it important
• By learning these trends students will be
  familiar with the idea that common element
  families act in similar ways.

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Lab safety

• This is a formal lab. It is of the utmost
  importance that you and your group pay close
  attention to the procedures! Any failure to
  adhere to the procedures will constitute removal
  from the lab.
• Every member is responsible for wearing safety
  glasses the entire time during the lab exercise.
• Absolutely no horseplay will be allowed. No
  exceptions!

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Formal lab write ups

• Hypothesis
• If I mix an unknown solution to ammonium
  carbonate or ammonium phosphate then it will
  react according to the type of element present.
• Procedures
• Copy the procedures.
• Data/data tables
• Copy data table and complete it.
• Answers to questions
• Answer all questions in complete sentences.
• Conclusions
• Use your data and periodic table to write a
  conclusion.

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When finished with the lab

• Clean all test tubes thoroughly! Others need to
  use them also.
• Turn in your completed lab into your classes
  folder.
• Grab a class set of the balancing equations
  worksheet and work on this on your own paper.
  Make sure to write down all questions as the ones
  you dont get finished in class are due on Friday
  as homework.