How to Make Frost Science in a Can Science Experiment for Winter

This easy frost in a can activity allows children to visually see how to make frost. This frost experiment is a fun project for elementary age students in kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, 5th grade, and 6th graders! Plus, all you need for this how to make snow science experiment are a few simple materials! So try this winter science experiment this January!

frost in a can

Have your kids ever wondered why frost begins to appear in the morning as winter approaches? If they have, you’re in for a treat! This easy frost in a can activity not only answers that question but also allows children to visually see how frost forms right before their eyes. It’s an engaging and educational frost experiment that’s perfect for elementary students in kindergarten through 6th grade!

With just a few simple materials that you likely already have at home, you can showcase the magic of winter science. All you need are a few common items: a can, ice, and some hot water. The process is simple and safe, making it ideal for children to explore scientific concepts of temperature and moisture in a fun and interactive way.

This project demonstrates how frost occurs when the temperature of an object is lower than the freezing point of water in the air. As the warm, moist air touches the cold surface, it causes water vapor to condense and freeze into tiny ice crystals, creating beautiful frost patterns. Not only does it spark curiosity about natural phenomena, but it also encourages hands-on learning, critical thinking, and experimentation.

So, if you’re looking for a fantastic winter activity to engage your children this January, gather your materials and give this frost in a can experiment a try! It’s a fantastic way to merge science and creativity, making learning enjoyable and memorable. Plus, you might just instill a lifelong love for science in your little ones.

We have lots more winter activities and science experiments for kids to choose from! Plus don’t miss exploding snowman experiment, erupting snowman science, free winter science activities pdf, and melting snowman experiment.

how to make frost

To make your own frost you will need a couple simple materials you probably already have on hand:

Supplies:

• Tin cans – cleaned and remove sharp edges
• Ice – crushed or cubed will work
• Salt

how to create frost

Salt lowers the freezing point of the ice. This causes it to pull heat from the air and tin can, significantly dropping the temperature on the surface of the tin can. Moisture from the air will freeze as it comes in contact with the cold surface of the can, leading to the creation of frost.

frost experiment

In this experiment we wanted to explore the importance of salt in the frost creation process. To do this we set up a control, plus our experiment.

Our control consisted of a tin can filled with ice but no salt. We filled the other tin can with ice and salt sprinkled over all the ice. Then we sat back and watched.

Very quickly the tin can with the salt and ice mixture started getting colder. Over time the cold became intense and there was a bit of condensation on the tin but it wasn’t turning to frost and was so thin it was almost not there. The tin can was also hard to touch it was so cold, but even 15 minutes later we still had no frost.

We were stumped. The tin can with salt ice was so cold it stuck to my fingers when I went to empty the ice from it. The tin can with no salt was just cool. There was a significant difference in the temperatures, just no frost.

how to make snow science experiment

Here is a close up. Just a very thin layer of condensation, but no frost build up or crystallization like we see in the frost outside.

Our how is frost formed experiment was a failure.

But scientists don’t fail, they examine, evaluate, investigate, then experiment again.

Making Adjustments and Learning from Failure

frost on a can experiment

After our first make your own frost experiment failed to produce frost we discussed what was needed for frost to form. We had the tin cans that would conduct the cold. Having it stick to my fingers was proof of that. But something was missing.

It’s winter here, and winter in our neck of the woods is cold and very, very dry. After explaining this to the kids, I asked if they could think what was missing for our frost to form.

Very quickly they came up with the answer: humidity! Our air is lacking the humidity or moisture in the air that we needed to create frost.

We explored a few different ideas for how to adjust this variable in our experiment. We placed steamy cups of water near the tin cans. We tried adding water to our tin cans. We tried blowing on them. Changing all of those variables failed to produce frost. Then we decided to move the whole experiment to the washroom while someone was having a shower, and it worked!

Winter science experiment

We finally created frost! We had beautiful little crystals and wonderful frost build up on the can.

It took a little experimentation and exploring the science, but going through this process of scientific experimentation made for a learning experience that will stay with my kids for a long time. They not only learned about how frost forms, but learned about our dry climate and why it is so dry in winter.