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8 Science Experiments for Kids with Salt

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We love science experiments you can do right in your kitchen with materials you already have. We have some kitchen science activity ideas. Today we put together fun and easy science experiments using salt. We all have salt at home, and it is inexpensive. All the activities listed here are fun and easy, and all you need are salt, ice, water, oil. Enjoy.

8 Salt Science Experiments for Kids

Love kitchen science experiments with materials you already have in the pantry. These simple science activities all use salt plus one or two other ingredients. Kids not only learn salt attributes, but also scientific thinking, process, and methodology. Cool food STEM project ideas to do at home or school or homeschool.
How to float eggs in water? This science experiment with salt also teaches kids why it is easier to float in ocean water.

I like how this experiment expand from the floating egg experiment, and visually show kids that salted water is heavier.

This colorful experiment further explores the density of salt vs. water, from a different angle. In addition to water and salt, kids also see that oil is lighter than water.

Do you have snow in winter? Why do we put salt down on the road when it snows? This salt and ice activity will show kids the reason.

This ice fishing activity also shows kids the melting effect, with added fishing fun.

Another way to show kids that salted water has higher freezing point, is to put a cup of water, and a cup of salted water in the freezer, and check back regularly every 10 minutes, and keep record on which one freeze first. More than likely, kids will see that the cup with just water freezes faster than salted water.

Have you ever grown your own salt crystal, and observe the shapes of the crystal? If you add some food color into the water, you are going to see a more beautiful outcome.

After growing crystal, you can then make a crystal sun catcher. Instead of regular salt, this one uses Epsom salt.

Salt Pendulum is a fun activity for kids of all ages. Ask kids measure the time that the pendulum bob swings from one end to the other, and predict what will impact the time? Will change the length of the string change the time? How about the weight, ie. the amount of salt to start with?

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Looking for more kitchen science activities for kids? Try the 8 Fascinating Egg Science Experiments for Kids and 5 Pepper Science Experiments Kids Love.
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pepper and soap experiment and beyond
For even more kitchen science activities, check out the 150 Kitchen STEM Activities for Kids.
kitchen STEM activities for kids

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