Notice to all employees of
Madison Bubbleology Research and Development
Our marketing experts report that our competitors, The Einstein Bubbleolgical Society
of North Appleton, have inched ahead of us in the bubble market! It seems more kids
are buying Einstein bubbles than Madison bubbles, we need to develop a new bubble
formula to make better bubbles!
You need to test our basic formula (250 mL JOY detergent + 1 gallon tap water). Along
with this basic formula, your research team should explore the surface tension breaking
powers of approved additive(s) and their optimal concentrations. First, you need to have
some basic training in water’s surface tension capabilities:
+
+
These are
+
--
WATER
Molecules!!
--
-+
--
Surface tension inhibits the formation of bubbles, therefore we need to optimally
decrease the surface tension of water. How you say??!! Additives!!!
A substance that breaks water’s surface tension is soap! Bubbles tend to break as air in
them evaporates. To delay evaporation, an additional additive can be included which
delays evaporation. These additives that delay evaporation are called hygroscopic.
Glycerin, corn syrup, and baby oil are known hygroscopic substances, but at what
amounts are these optimally affective??
You will attempt to better the stock solution by adding different
amounts of a known hygroscopic liquid to the stock bubble solution
(250ml JOY + gallon tap water)
1.
2. Your task as a research team is to use your skills as scientists to
develop a better formula for making better bubbles!!****
3. What does better mean???______________
Good luck, but more importantly, GOOD SCIENCE!!!
Problem: How can “Sudsy” be reformulated to form larger bubbles?
Hypothesis:
__________________________________________________________________________________
______________
__________________________________________________________________________________
________________________.
Data Table:
# of
Bubbles
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Control
Test 1
Test 2
Test 3
Ratios:
Control: 10 mL of Sudsy (1 gallon water + 250mL JOY dish soap)
Test 1: ____ mL Sudsy : __________________
Test 2: _____ mL Sudsy : __________________
Test 3: _____ mL Sudsy : __________________
Test 4: _____ mL Sudsy : __________________
Test 4