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Liquid or Solid Science Experiment

Have fun learning about non-Newtonian fluids and what makes something solid or a liquid in this simple science experiment.

Best of all, the liquid or solid science experiment is low-mess, making it ideal to make in a classroom setting or with a group of kids at home.

Kids love hands-on science experiments they can touch and feel. Find this experiment and more in our free science activities plan.

Looking for more slime recipes for kids? Try making this easy Valentine Glitter Slime and have a blast with this Leprechaun Slime Activity.

Looking for a hands on science activity for kids? Try this simple science experiment that explores different states of matter. Is it a solid or a liquid? What is a non-Newtonian liquid? Low mess kids activity for school or home.

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How to Do the Liquid or Solid Science Experiment

In this easy science experiment, you’ll be making a non-Newtonian putty.

Many kids also know it as slime.

Your kids will love the opportunity to play with slime, making it the perfect time to ask them to make observations during this hands-on science activity.

After you finish this experiment, try this ice science activity. It’s perfect during the winter season!

Supplies needed to make putty or slime for science activity


RELATED: 10 Different Uses for Borax Powder

Liquid or Solid Science Experiment Directions

Add ¼ of a cup of water to each bag.

Squeeze in ¼ of a cup of glue per bag.

Add a few drops of food coloring for fun. Make one bag for each child doing this activity.

Two bags with ingredients for the Liquid or solid science experiment

Close the baggies and seal them tightly. Let the kids shake up the bags to mix the liquid.

In another container, heat some water until it is hot but not boiling. Add one teaspoon of Borax powder per cup of water and stir until dissolved.

When the water cools, add ¼ a cup of water to each bag.

Seal the bags and let the kids mix them up.

Close up of kid mixing up slime putty ingredients in bag

After a few seconds, the putty will form inside the bag.

Remove the putty and discard any remaining liquid.

Experimenting with slime putty and observing how it's like a solid and liquid

Show the kids how the putty has properties of both a liquid and a solid, depending on how they play with it.

When does it act like a solid?

When does it act like a liquid?

If they’ve ever made oobleck, which is another non-Newtonian fluid, ask them to make comparisons.

Kid holding slime as it stretches down

The Science of Slime

This putty (aka slime) is a non-Newtonian fluid.

This simply means that the putty has properties of both a solid and a liquid.

When you squeeze it or press it, it feels solid, but if you relax and let the putty flow, it moves like a liquid.

Depending on how much water you add to the recipe, the putty will be more liquid like or more solid like.

We hope you enjoy conducting this liquid or solid science experiment with your kids!

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