Since there are so many absences (because of hunting and being sick) I will start to post the work for the week here, so that if you miss a day, you can make up the work.  If there is a handout you need, ask Thomas.  You may be able to work ahead, but all work is due by the end of class on Thursday!

Experiment for the week:
TWO DAY LAB
Do this as you have time and as the materials are available. 
Work in groups of 3-5
Problem: How long will it take food coloring to diffuse into Jell-O?
Materials Needed:
10-20 grams of Great Lakes Unflavored Gelatin
1 500ml glass beaker
Hot plate
5 drops of food coloring
Refrigerator
500ml distilled water
Glass stirring rod
Procedure:
Day One:
Wear goggles!
1. Measure 500ml distilled water into a CLEAN glass beaker
2. Place the water on the hotplate and bring to a boil (note- hotplates are only used by the sink)
3. Turn hotplate OFF
4. Add between 10 and 20 grams of Gelatin
5. Stir with glass stirring rod until Gelatin completely dissolves
6. Let cool for 10 minutes.  DO NOT remove early
7. Label your beaker with your names
8. When your beaker is cool, give it to Thomas.  He will place it in the refrigerator after class.
Day Two:
Goggles not required
1. Add 5 drops of food coloring to the top of your Jell-O.  Write down the time you do this (to the minute)
2. Work on your Lab Write up
3. While working on other work, watch your Jell-O.  Write down the exact time it reaches the 400, 300, 200, and 100ml marks.
4. Clean your beaker by the following steps:
a. Heat your beaker on the hot plate until the Jell-O melts (do NOT boil)
b. Turn on the hot water at the sink
c. While the hot water is running, slowly pour your Jell-O down the drain
d. Rinse out beaker
e. Turn off water

Lab Write up:
After adding the food coloring, record the following information on a sheet of lined paper:
Name:
Date:
Diffusion lab
Problem:
Hypothesis: (you write your own)
Procedure: (Copy the procedure down)
Results: (make a table of time & ml marks)
             (make a graph with time on the horizontal and ml mark on the vertical axis)
             (draw a line of best fit)
             (determine the approximate slope of the line- ask Thomas)
Conclusions:
             (Write one paragraph about what you learned)

Weekly Work- Do this work during class and in this order.  Keep your work and bring it with you each day!  Turn in on Thursday!
1. Read chapter 4 in the text book.  Complete the Directed Reading Packet
2. Define the key terms on page 73
3. Typed Essay (pick one):
A. Communication
Discuss how athletes and coaches communicate during a sporting event (speaking, writing, hand signals, etc) and what happens when the communication is interrupted.  Compare this to cell communication.  (This will be graded on spelling, so be sure to have it proof-read)
B. Sports Drinks
ask some of your friends why some athletes prefer sports drinks, rather than water, during and after a basketball game or NYO tournament.  Be sure to include a discussion of ions.  Look at the labels of 2 different sports drinks.  Make a table of the ions contained in each. (This will be graded on spelling, so be sure to have it proof-read)

Extra Credit:
Research and Answer question #23 on page 75 of your book.  Better answers will receive more points.