DESCRIPTION:

MATERIALS NEEDED:

My favorite bubble formula:

• 8 cups cold water
• 1 cup DAWN dish washing detergent for kitchen sink type dish washing
• 1 tablespoon glycerin (Wilson cake decorating supplies or your local pharmacy) Mix. Let sit overnight for SUPER BUBBLE.

PROCEDURE:

HANGARS

1. Pour soap solution into pie pans. Have students bend and shape their coat hangers into squares, stars, or circles, but keep the shape small enough to fit into a pie pan.
2. Have students guess the shape their bubble will form. Put the homemade wands into the soap solution slowly draw the wand through the air.

Observation:

• What shape did the bubble form? Observe the other students' bubbles.
• Who can make the biggest bubble?
• Are all bubbles round?

WANDS THAT COME WITH THE BUBBLES

3. Using the wands that usually come in soap solution:
4. Can anyone blow a bubble inside a bubble (Use the coffee stirrer)

Observation:

• Can a team blow 4 bubbles together and insert a 5th bubble in the center?
• What colors do you see in a bubble?
• What do you look like in a bubble?

USING A PIECE OF UPHOLSTERY

5. Using a piece of upholsters edging and 2 sticks, dip the cloth in the soap solution. Slowly and carefully draw the wand through the air.

Observation:

• Can you make a bubble as large as a classmate?

USING THE AQUARIUM

6. Put the soda in the shallow pan in the aquarium.
7. Add the vinegar.
8. Slowly blow a bubble wher it goes across the top of the aquarium and sinks onto the cloud of CO2.

Obvservation:

• CO2 is invisible, but can you see where it meets the atmosphere?
• The bubbles get larger as they sink because the CO2 enters the bubble and replaces the atmospheric air there.

USING DRY ICE

9. Put the dry ice in the aquarium.
10. Let it sublimate.
11. Blow the bubbles across the top of the aquarium to drift on the layer of carbon dioxide.

Observations

• Sometimes the bubbles freeze. Frost does form at the bottom of the aquarium.
• CO2 sublimates.
• Why the frost? From the water in the soap bubbles?