Halloween Science: Ghost Eggs!
This is a fun
and easy science activity to utilize the properties of dry
ice to making some spooky
ghosts for Halloween!
You will need:
dry ice (solid carbon dioxide, can be purchased at Meijer), warm water,
bubble solution, plastic container with nozzle, hose, funnel, safety glasses,
Now try this:
Make ghost egg machine:
Attach one end of hose to the nozzle of plastic container.
Attach one end of hose to a funnel.
Make ghost eggs:
Place warm water into ghost egg machine and drop a few pieces of dry
ice. Be cautious with the dry ice, wear gloves and safety glasses
and never seal the container.
Attach the hose making sure the ghost egg machine making sure it
doesn't seal the container and gas can escape.
Dip the funnel into bubble solution and watch the ghost eggs form.
Collect them on a clean towel or in your gloves, break them open and
let the ghost escape.
What is happening?
Dry ice is solid carbon
is at a temperature of -78.5OC (-109.3OF). When
the temperature increases, the solid carbon dioxide does a phase change
to a gas. This is a unique substance that does a phase change from a
solid to a gas without going through it's liquid phase. This process is
called sublimation. When placed in water solid carbon dioxide takes
water into the atmosphere as water vapor, this is what makes the pumpkin
look like it is smoking. The gas also gets trapped into a bubble when
placed in bubble solution. The carbon dioxide-water vapor mixture is
also heavier than air so it falls to the ground when formed.