Name _____________________________
North Pole Bureau Of Investigations
Case #1225: Case of the Christmas Cookie Mystery
Mrs. Claus needs your help! Each Christmas, Mrs. Claus makes a
batch of her special sugar cookies to give Santa all the energy he needs to
deliver presents to all the good little boys and girls around the world. A
bad little elf has snuck into the kitchen and messed up all the special
baking powders.
He has left a note with three
mystery bags of white powder. The
North Pole Bureau of Investigations
has provided samples of six white
powders found at Santa's house
and the three mixtures left by the
elf.
Without your help, Mrs. Claus
will not be able to make her cookies
and there will be no Christmas! Help
Mrs. Claus save Christmas!
Part 1: Follow the directions to test each sample (# 1-6) with water,
vinegar, iodine, and heat. Record your observations in the top part of the
chart on the back of this page.
Part 2: Follow the same procedure to test the three Mystery Mixtures
(A, B, and C). Record your observations in the bottom portions of the
chart. Use your results from Part 1 to determine which mixture is the
special sugar cookie mix!
Mrs. Claus' Special Sugar Cookies
Mix 15 cups of flour, 6 teaspoons of baking powder,
5 cups of powdered sugar, 3 pounds of butter, and
10 eggs in a large red bowl. Add lots of tender loving care
and a bit of magic dust, then bake until golden brown.
T. Trimpe 1999
I’m a bad little elf,
That’s plain to see;
There will be no cookies
for Santa this year,
Which means more
presents for me!
Sample Description Water Test
Vinegar Test
Iodine Test
Heat Test
1
2
3
4
5
6
Sample Description Water Test
Vinegar Test
Iodine Test
Heat Test
A
B
C
Part A
Part B
Which mystery mixture is the special Christmas Cookie mix? ________
Why did you choose this mixture?
Powder Testing Procedure
Case #1225: Case of the Christmas Cookie Mystery
IMPORTANT: Each person should test only one powder at a time!
DO NOT ALLOW SAMPLES TO MIX TOGETHER!
FOR E