Last month, on the drive home from college, my son asked me,
“So, have you made any summer merit badges for Younger Daughter yet?”
Knowing that he did not have a summer job lined up, I
revealed my secret plan to him. “I have
this great idea! You are going to teach
chemistry to Younger Daughter this summer!”
This idea solves two dilemmas. The 10th grade chemistry class is
difficult, so YD could use as much advance preparation as possible. Son could use some goals and purposeful
activities for the summer.
And thus, the Summer Chemistry Merit Badge was born. Here are the requirements we came up with.
* * * * * *
The Summer Chemistry Merit Badge
1.
Cut a round onion into small chunks. Separate the onion chunks into
three equal portions. Leave the first portion raw. Cook the second portion of
onion chunks until the pieces are translucent. Cook the third portion until the
onions are caramelized, or brown in color. Taste each type of onion. Describe
the taste of raw onion versus partially cooked onion versus caramelized onion.
Explain what happens to molecules in the onion during the cooking process. (Note: this also counts toward the “Science
of Cooking” merit badge.)
2. Learn the layout of the periodic table of
the elements. Memorize the name, symbol,
atomic number, group, period, block of 5 elements.
http://www.webelements.com/
3. Perform chromatography and describe what
is happening in the chromatography process.
4. Learn the factor label method.
* * * * * *
#1 is taken directly from the Boy Scout chemistry merit
badge. #2 is what I thought would be
important and not annoyingly difficult. That
web site has a nifty interactive periodic table. #3 and #4 are Son’s suggestions. I have no idea what the factor label method
is. Maybe I should try for this merit badge.
We also came up with this merit badge, as a complement to
the Chemistry badge.
* * * * * *
The Summer Science of Cooking Merit
Badge
1. Complete Requirement 1 of the Chemistry
Merit Badge.
2. Perform the chocolate-cake-in-a-mug
experiment (see separate page) and show your recorded results.
3.
Predict and then observe the psychological change in your mother when
you make an entire meal and serve it to the family. Meal must be pre-approved for nutritional value,
taste, and ease of preparation.
4.
Make homemade ice cream. Explain
what a phase change is, and how salt is involved.
* * * * * *
And here is the “Chocolate-cake-in-a-mug” experiment. Son’s task on Monday is to test it to make
sure that the batter does not overflow and create a mess in the microwave. His other task for Monday is to mow the lawn. I wonder which one he will do first.
* * * * * *
Chocolate Cake in a
Mug Lab Experiment
Lab Equipment for
Recipe 1 and 2
1 large coffee mug
Measuring spoons
Mixing spoon
Stopwatch or other accurate timer
Clean ruler
Recipe 1
2 Tablespoons flour
2 Tablespoons sugar
1 Tablespoons cocoa
1/8 teaspoon baking powder
pinch salt
2 Tablespoons egg (whip with fork) OR egg substitute
1 1/2 Tablespoons milk
1 1/2 Tablespoons oil
1 Tablespoon chocolate chips
1/8 tsp vanilla
Recipe 2
2 Tablespoons flour
2 Tablespoons sugar
1 Tablespoons cocoa
1/2 teaspoon baking powder
pinch salt
2 Tablespoons egg (whip with fork) OR egg substitute
1 1/2 Tablespoons milk
1 1/2 Tablespoons oil
1 Tablespoon chocolate chips
1/8 tsp vanilla
1. Do not do this
experiment all in one day. That would be
too much chocolate cake at once. Before
starting, check that you have all the ingredients on hand.
2. Predict the
outcome of each recipe. Explain why this
prediction is not a hypothesis.
3. Make each recipe 3
times - that’s a total of 6 small
cakes-in-a-mug. Use the same size/kind of mug each time. (Note that the
ingredients are halved from the original recipe.) Measure the ingredients accurately.
4. Measure and record
your observations about the following.
For c and d, please record the observations of 2 people (yourself and
one other).
a. Height above or
below the rim of the mug immediately upon removal from microwave, in
centimeters.
b. Height above or below the rim of the mug 1 minute after
removal from the microwave, in centimeters.
c. Taste it, and describe the texture of the cake.
d. Overall taste of the cake (rated on a scale of 1 to 5, 1
being awful and 5 being the best unfrosted chocolate cake ever).
e. Did the chocolate chips sink to the bottom?
Protocol
Add dry ingredients to mug, and mix well. Add the egg and
mix thoroughly.
Pour in the milk and oil and mix well.
Add the chocolate chips and vanilla, and mix again.
Put the mug in the microwave and cook for exactly 1
minute. Remove from microwave and record
your observations.
Remove from mug and share half with someone.