Cooking with Kuiper: Project Supply Chart

All Lined Up for Comet Building

All Lined Up for Comet Building

(Update:  2/18/2015)

As mentioned in the notes for project leaders, it’s best to repeat the procedure at least twice–three times if the class is large, to ensure that everyone has a chance to participate in the “safe” portions of the activity and to produce a variety of comets to observe.

Purchase dry ice in advance by as much as a day (purchase at the higher end of the quantity range if you need to store it overnight) and  store wrapped in insulating material, but not  tightly sealed.  (Frozen CO2 will sublime to gas and can even explode a container that is sealed too tightly.)  A small non-airtight cooler tucked into another lightly-closed, non-airtight cooler works fine, especially if wrapped in a blanket and stored in a cool location.

For the ice-cream topping, choose a small bottle with a squirt-style top full of caramel- or chocolate-flavor syrup for ice-cream sundaes.  Do NOT purchase hard-shell toppings;  stick to sticky sugar syrups.  Be prepared to fend off requests to sample the syrup.

For ammonia, do not use pure ammonia;  simply choose a basic non-sudsy ammonia-based cleanser.  A “sport-top” (squirting-style) water bottle about half-full of ammonia works well and keeps the ammonia away from hands, eyes, and clothing.  However, be sure to clearly label the bottle with the contents.

For trash bags, choose a good, sturdy brand.  They’ll take significant abuse!

Please note carefully that most equipment is required to be either plastic or wood.

  Per comet

For about 3-4 comets, allowing for waste and failures

 

Estimated cost

(2015 prices)

Good sturdy “tall kitchen” garbage bag, cut down one long edge to make a liner for the bowl 1

2

(have a second on hand in case the original tears)

$0.50

($12 for box of 45)

Additional “tall kitchen” garbage bags

3

Open the bags and layer them one inside the other, to create a triple-thick bag

6

Have a second layered set of 3 bags on hand in case of tears

$1.50

($12 for box of 45)

Large plastic mixing bowl, 2-cup plastic measuring cup, tablespoon measure, large wooden spoon

1 of each

Reminder:  for safety, use plastic containers and a wooden spoon

1 of each Bring from home or borrow from volunteers
Water 2 cups

2 quarts on hand

(store in a pitcher for measuring out in 2-cup quantities)

n/a
Sand or fine gravel 2 tablespoons ½ cup zero
Ammonia 

One squirt (about 1 tablespoon)

 

½ cup

$1.50

($10 for 28-ounce bottle)

Ice-cream topping

One squirt (about 1 tablespoon)

 

About ½ cup (Bring at least a 4-ounce container of syrup.) $6.50
Dry ice 2 cups of dry ice, after crushing. About 7-10 pounds of dry ice. $15($1.50 per pound)
Safety goggles

1 pair, adult size

1-2 pair, adult or child size (depending on student age)

1 pair, adult size

1-2 pair, adult or child size (depending on student age)

If not available in classroom—one-time purchase for reuse in many projects. $5 each

 

Heavy work gloves 1 pair, to fit Project Leader 1 pair, to fit Project Leader Use own gloves or borrow from volunteer (a new pair would cost about $10-12)
Total Cost: $39.50

For an easy-to-print version:  Just Supplies Cooking with Kuiper

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