Drill

1
Drill

• Get 2 post-its and write your quantitative fact
  about the damage caused by Katrina on one, and
  the qualitative fact on the other.
• Put your desk on front, your name on the sticky
  side.
• Two at a time, put post-its up on the board under
  appropriate category.

2
For Tomorrow

• Look online, in newspapers, listen to the radio
  and bring in two facts about the cost of the
  Katrina recovery effort.

3
Scientific Method

• The question of the day
• The chemistry of eggs! How can you tell a
  hardboiled egg from a raw egg?
• Hurricane Katrina facts well probably get to
  that tomorrow. If you forgot, bring 2 for
  tomorrow. One of each type.

4
Eggs!

• Chemistry is the science that deals with
  processes that happen at an invisible scale.
• For something different, today were going to
  enjoy something that chemists rarely get to have
  certainty!
• Why is it hard for chemists to have certainty?
• Whats the next best thing?

5
Eggs!

• Problem Figure out which unknown egg is
  hardboiled which is boiled.
• 2 minutes
• I. Observe the eggs, dont touch them yet. What
  is your Hø? What are you basing it on?

6
Eggs!

• 5 minutes
• Make a list of 3 people/organizations/publications
  that you might use to research this if it were
  that important. It is today!

7
Eggs!

• 10 minutes
• Plan 3 non-invasive procedures
• to obtain quantitative qualitative
• data about hardboiled eggs and raw eggs. At
  least 1 quantitative 1 qualitative.
• Write out each procedure step by step. One might
  be the one used in the class demo if you miss a
  step, your Vanna White cant fill it in for you.

8
Materials available

• Graduated beaker
• Graduated cylinder
• Water
• Scale
• The clock
• Tray

9
The Experiment

• Well run through 4 different procedures.
• As we go through, take down the raw data points
  that we obtain.

10
Graph the data!

• Lets meander on over to Excel.

11
End of the experiment

• Last 5 minutes of class
• Was your Hø correct or incorrect?
• What is one thing that you learned from todays
  activity?
• What is another kind of question you could answer
  the way we thought about eggs today? Would you
  have certainty?

12
Last slide!

• As you leave today, turn in your egg lab notes.
• Tomorrow well talk eggs again.
• Remember your HW 2 is due Friday.