Is it really cold outside? If so, it’s the perfect time to go outdoors and blow frozen bubbles with frost patterns! All you need is bubble solution, a bubble wand or a straw, and really cold temperatures.
How Cold Is Cold Enough?
Aim for a day when it’s no warmer than 20° F (-6°C). The ideal temperature is below 9–12°F (-11 to -13°C). Whether or not it’s windy matters too, since moving air pops bubbles before they freeze.
Bubble Solution for Blowing Frozen Bubbles
Any bubble solution works, but you’ll get the best patterns if your mixture contains corn syrup, sugar, and/or glycerin. Use a store-bought mixture, if you have one, otherwise making your own is simple:
- 1 cup warm water
- 2.5 tablespoons dish soap
- 2 tablespoons sugar
- 2.5 tablespoons corn syrup
Mix the warm water with sugar and corn syrup until dissolved, then gently add the dish soap to avoid creating foam. If you like, stir in a bit of glycerin, too. Refrigerate the bubble solution before use. This thickens it so you get stronger bubbles. Also, the cooler liquid doesn’t evaporate as quickly, so bubbles last longer.
Frozen Bubble Blowing Techniques
Use either a bubble wand or else dip a straw into the bubble solution and blow bubbles. Blow bubbles slowly onto cold surfaces like snow-covered ground, cold metal, or frosty tables. Gloves and mittens are great surfaces, too.
Troubleshooting Tips for Making Frozen Bubbles
Creating frozen bubbles can be tricky, especially if conditions aren’t ideal. Here are some common challenges and solutions:
1. Bubbles Pop Too Quickly
✅ Solution:
- Ensure calm wind conditions. Even a slight breeze can burst fragile bubbles.
- Use a higher sugar or glycerin content in the solution to strengthen the bubble film.
- Chill the bubble solution before use—colder solutions produce stronger bubbles.
2. Bubbles Don’t Freeze Properly
✅ Solution:
- Make sure the air temperature is below 12°F (-11°C) for optimal freezing.
- Try placing the bubble on a cold surface, like snow or ice.
- Increase sugar or corn syrup concentration to slow down evaporation and enhance frost visibility.
3. Frost Patterns Aren’t Visible
✅ Solution:
- Let the bubble freeze slowly. Slow freezing promotes intricate frost pattern formation.
- Adjust the solution by adding a bit more sugar. This promotes more visible ice crystal formations.
- Make sure humidity is not too high, as excessive moisture in the air interferes with crystal growth.
4. Bubbles Freeze Too Fast and Become Cloudy
✅ Solution:
- Try blowing the bubble under slightly warmer conditions, around 5°F to 10°F (-15°C to -12°C). This slows freezing and produces better crystals.
- Add more glycerin or corn syrup to delay crystallization and allow time for clear ice patterns to form.
Frozen Bubbles With Dry Ice
If you don’t have seriously cold winter, your other option is blowing bubbles over dry ice. The solid carbon dioxide so cold that it quickly freezes the water in the bubbles and makes frost patterns. Because dry ice undergoes sublimation into carbon dioxide vapor, the bubbles hover in the chilled air for easy observation.
Watch Bubbles Freeze in Real Time
Many of us live in climate where it never gets cold enough to do this project. Here’s what it looks like in real time. If you ever get the chance to visit the frozen north (or south), be sure you bring a bottle of bubble solution so you can try this yourself!
The Science Behind Frozen Bubbles
Frozen bubbles are a fascinating example of phase transitions, supercooling, and crystallization. The delicate frost patterns that appear on the surface of a bubble result from the freezing process of the water-based soap film. Here’s a breakdown of the science at play:
1. Bubble Composition and Freezing Process
A soap bubble consists of a thin layer of water trapped between two layers of soap molecules. When exposed to freezing temperatures, the water in the bubble film begins to freeze, forming intricate ice crystals. The patterns that appear depend on several factors, including temperature, humidity, and airflow.
2. Ice Crystal Formation
- The freezing process starts at a nucleation point—tiny imperfections in the bubble film, dust particles, or the surface where the bubble lands.
- Ice crystals spread outward in dendritic (branching) patterns, similar to snowflakes.
- The rate of freezing affects the appearance of these patterns. Rapid freezing results in smaller, more chaotic ice formations, while slower freezing allows more intricate and symmetrical frost patterns to develop.
3. The Role of Supercooling
Supercooling occurs when the water in the bubble remains liquid even though it is below its freezing point. This happens because water needs a nucleation site to start forming ice. When the bubble is disturbed or a nucleation site forms, the liquid phase quickly transitions to solid ice, producing a rapid freeze.
4. Effects of Additives (Sugar, Corn Syrup, and Glycerin)
- Sugar and corn syrup increase the viscosity of the bubble solution, slowing evaporation and preventing the bubble from popping too quickly.
- Glycerin acts as a humectant, retaining moisture and delaying freezing. This allows for the formation of more visible frost patterns.
- Dish soap reduces surface tension, allowing for larger, more stable bubbles that freeze more slowly.
References
- Atkins, P.; Jones, L. (2008). Chemical Principles: The Quest for Insight (4th ed.). W. H. Freeman and Company. ISBN 978-0-7167-7355-9.
- Jeffery, C.A.; Austin, P.H. (1997). “Homogeneous nucleation of supercooled water: Results from a new equation of state”. Journal of Geophysical Research. 102 (D21): 25269–25280. doi:10.1029/97JD02243
- Oliver, John E. (2005). The Encyclopedia of World Climatology. Springer Science & Business Media. ISBN 978-1-4020-3264-6.