Science projects for Halloween

dry-ice-bubble

TERRE HAUTE, Ind. (WTHI) – A Halloween party with a fog machine helps to add another level of frightful authenticity.

However, they can be expensive.

Rose Hulman Chemistry Professor Rebecca DeVasher say dry ice can save you money and achieve the same results.

“What you’re actually seeing when you see the fog effect from dry ice is actually the water cooling on the very, very cold dry ice,” explained DeVasher.

Warm water, dye, dry ice, and a few lab beakers can help you go for the mad scientist vibe.

“Dry ice is negative 78 degrees Celsius,” said DeVasher. “It’s hitting that warm water and creating water vapor. The water vapor will rise and come out of the top [of the beaker].”

You can also make some spooky bubbles (informally known as boo bubbles) using dry ice (and warm water) in sports cooler with a spout and venting it through plastic tubing with a funnel. After carefully tubing the gas from the cooler and dipping the funnel, you can create “fog-filled” bubbles like those featured at the top of the article.

DeVasher recommends using one drop of dish soap and one drop of glycerin in your soapy solution.

Just remember that safety always comes first when working with dry ice, and you should wear gloves, glasses, and use tongs when you handle the ice. You’ll also need proper ventilation.

“This hose allows the pressure to vent. when you seal dry ice, you’re creating a bomb,” warned DeVasher.

You can also make a creepy hand by filling a glove with baking soda and wrapping it over a glass filled with vinegar. The carbon dioxide from the baking soda and vinegar mixing should fill the glove.

Remember, kids should always be supervised if participating in these experiments.

You’ll find a link to the American Chemical Society at this address: https://www.acs.org/content/acs/en/education/students/highschool/chemistryclubs/activities/halloween-chemistry.html

You’ll find directions (and this author’s inspiration) for these and other Halloween projects.