Dry ice is the solid form of carbon dioxide (CO2), and is great for many experiments, like today's dry ice bubble.
Dry Ice Bubble:
Dry Ice
A round, large bowl
A cloth strip
Dish soap
Water
WARNING: Be careful with dry ice; use gloves and do not directly inhale the fumes.
Step 1: Soak the strip of cloth in a mixture of 2 tablespoons (30 mL) of dish soap and 1 tablespoon (15 mL) of water.
Step 2: Fill the bowl about halfway with water, and add a few pieces of dry ice.
Step 3: Run the soapy mixture around the edge of the bowl.
Step 4: Pull the soapy cloths across the top of the bowl. This will create a soap layer over it.
Step 5: Now watch as a bubble forms!
In this experiment, the dry ice went through a process called sublimation. That means the dry ice went from a solid to a gas, skipping the liquid form. Putting dry ice in the water caused it to sublimate quicker, creating fog that fills up your bubble until POP! The bubble explodes from the pressure of the fog.
Sources:
http://www.sciencekids.co.nz/experiments/dryicebubble.html
http://www.stevespanglerscience.com/lab/experiments/crystal-ball-bubble
Dry Ice Bubble:
Dry Ice
A round, large bowl
A cloth strip
Dish soap
Water
WARNING: Be careful with dry ice; use gloves and do not directly inhale the fumes.
Step 1: Soak the strip of cloth in a mixture of 2 tablespoons (30 mL) of dish soap and 1 tablespoon (15 mL) of water.
Step 2: Fill the bowl about halfway with water, and add a few pieces of dry ice.
Step 3: Run the soapy mixture around the edge of the bowl.
Step 4: Pull the soapy cloths across the top of the bowl. This will create a soap layer over it.
Step 5: Now watch as a bubble forms!
In this experiment, the dry ice went through a process called sublimation. That means the dry ice went from a solid to a gas, skipping the liquid form. Putting dry ice in the water caused it to sublimate quicker, creating fog that fills up your bubble until POP! The bubble explodes from the pressure of the fog.
Sources:
http://www.sciencekids.co.nz/experiments/dryicebubble.html
http://www.stevespanglerscience.com/lab/experiments/crystal-ball-bubble