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Easy Snow Storm in a Jar Experiment for Multiple Grades!

Winter science experiments and winter STEM activities are some of the best ways to explore the world when it’s cold outside. A classic winter science experiment that you can do indoors is the snow storm in a jar experiment.

This snow storm experiment can either be a science demonstration or you can create a hypothesis and test variations on the design to make it a science experiment. And use the free STEM extensions for open-ended snowstorm science experiment directions to scale the lesson for preschool, elementary, or middle school!

Snowstorm in a jar lesson plan with worksheets! The snow storm in a jar experiment can be scaled for preschool, elementary, or middle school!

Follow along to learn how to make your very own snow storm in a jar!

The Science Behind the Snow Storm in a Jar Experiment

Water and oil don’t mix.

This means that when water and oil are added to the jar, they stay separated. But, when you add a reactant to the jar (in this case the alka-seltzer tablets), water and oil are forced to interact to allow the carbon dioxide gas to escape.

Adding paint to the water thickens the water, which makes larger bubbles during the reaction process. The bubbling and swirling colors and glitter looks just like a snow storm!

But you can go further than simple carbon dioxide reactions with this snow storm activity. You may also want to explore the following science topics when making a snow storm in a jar:

  • Polarity
  • forces of attraction
  • Density (get a full explanation of density science in this hot and cold water density experiment)
  • Solubility
  • Immiscibility (a fancy word that explains that water and oil don’t mix)

Snow storm in a jar experiment hypothesis

If you are making a snow storm in a jar as a science fair project, you must have a hypothesis. A hypothesis is a informed guess about how something might work, or how certain changes might occur.

For this experiment, the snow storm in a jar hypothesis might be that changing how many alka seltzer tablets are added will change how violent the blizzard in a jar is.

Another hypothesis is that the type of oil in the jar doesn’t matter, or that it matters a lot.

Testing these hypotheses will make a fun science fair project for active kids.

snowstorm in a jar

Use the STEM extensions below to scale this lesson for preschool, elementary, or middle school!

stem extensions snow

Making a Snow Storm Jar with Vegetable Oil

One thing we’ve found when making a variety of snowstorm jars is that the type of oil changes how the reaction occurs. When baby oil is used, the bubbles are usually smaller, and the jar gets cloudier faster.

When vegetable oil is used, the bubbles are larger and it takes longer for the jar to become cloudy.

Because we like large bubbles, we often choose to use vegetable oil for our storm jar- even though it doesn’t look quite as sky-like.

If you’re in a rush, these are our favorite weather science kits.

What you Need for the Snowstorm in a Jar Experiment

supplies for snowstorm in a jar science experiment

For this snow storm in a jar experiment, you will need:

More Winter Science Experiments for Kids

Here are more fun wintery science experiments to try with your students!

Snow Storm in a Jar Experiment Instructions

Follow along with the printable instructions below to learn how to set up and complete the snow storm in a jar experiment!

Don’t forget to discuss the science behind this chemical reaction when completing this experiment.

And if you’re testing variables, try different oils in different jars to see which bubbles the fastest, or to see which oil allows the carbon dioxide gas to escape the fastest.

What other variations on this snowstorm in a jar experiment can you think to test?

Don’t forget to record your snow storm in a jar experiment data in a science notebook!

stem extensions
bubbling snowstorm in a jar

How to Make a Snowstorm in a Jar

Prep Time: 10 minutes
Active Time: 20 minutes
Additional Time: 15 minutes
Total Time: 45 minutes
Difficulty: easy
Estimated Cost: $5

This snow storm experiment can be a science demonstration or a science experiment by developing a hypothesis and testing variations on the design. And, to scale the lesson for preschool, elementary, or middle school, use the free STEM extensions for open-ended snowstorm science experiment directions!

Materials

  • Each group will need:
  • Plastic jar
  • Vegetable oil
  • Blue or white paint
  • Blue or white glitter
  • Alka-Seltzer tablets
  • Water

Instructions

    1. Fill your jar with about 1-2 inches of water (how much you use will depend on the size of the jar).
    2. Next, add some white or blue paint to the water and mix. snowstorm science experiment
    3. Add enough vegetable oil to fill the jar to about 3/4 of the way full. You want to leave some room at the top in case your students get a little too enthusiastic about adding the Alka-Seltzer tablets. snowstorm jar
    4. To do the experiment, drop about a quarter of a tablet into the jar at a time.
    5. Watch as the carbon dioxide gas catches the water in its bubbles and rises to the top of the jar.bubbling snowstorm in a jar

Notes

The more tablets you add, the more your jar will bubble and overflow.

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