1. Topic


2. Content

glycerin, dissolve, evaporation, dehydration 


3. Goals: Aims/Outcomes

1.To help the students get interested in science
2.To find out which type of bubble will last the longest



4. Objectives

1.To do all the work the same
2.To help the students learn about different units of measurement



5. Materials and Aids

 5 empty plastic cups
 100ml of liquid detergent
 500ml of water
 A bubble blowing toy
 10ml of corn syrup
 10ml of glycerin (may be purchased at pharmacies, including big
chains like Walmart or Target)
 10mg of sugar
 10ml of lemon juice
 1 stopwatch
 A measuring beaker
 A weighing scale
 1 black marker pen 


6. Procedures/Methods

A. Introduction
Bubbles are fun for all ages, this experiment will hopefully not
only get the kids more interested in science but also let them have
fun at the same time. 


B. Development
Showing the students how to properly mix the chemicals in an accurate
ratio. 


C. Practice
1. For this science fair project, the independent variable is the
additive added to the bubble solution " soap, corn syrup, glycerin,
sugar and lemon. The dependent variable is the length of time the
soap bubbles are able to last before bursting. This is measured with
a stopwatch. The constants (control variables) are the room temperature
and the mixing ratio of the bubble solution.
2. Using the black marker pen, the 5 plastic cups are labeled as "soap",
"corn syrup", "glycerin", "sugar" and "lemon".
3. Each cup is filled with 100ml of water. Another 20ml of liquid
detergent is added to each cup and mixed with the water. Then, depending
on the marking on the cups, 10 ml of corn syrup, glycerin, sugar and
lemon is added to each cup and mixed once more. The cup marked soap
will be the control and it contains only a mixture of water and detergent.
4. The bubble blowing toy is dipped into one of the plastic cups and
a bubble will be blown. The stopwatch is started and it is observed
how long the bubble lasts before it bursts. The experiment is repeated
5 times and the longest time clocked, is recorded in the table given
below.
5. Procedure 4 is repeated using the solutions in the other 4 cups.
The longest time taken before the bubble bursts is clocked and the
results recorded.



D. Checking for understanding
1.Make sure the students are correctly doing the measuring
2.That the students are accurately checking the data


