Simple science experiments at home or in the classroom are so easy to set up and perfect for young kids to play and learn with science. Every day materials and supplies become awesome preschool science experiments and STEM activities. Learn about what happens when you mix oil and water together. There are tons of ways to have fun with science all year round!

OIL AND WATER EXPERIMENT FOR PRESCHOOLERS

MIXING OIL AND WATER

Get ready to add this simple oil and water experiment to your distance learning or classroom lesson plans this season. If you want to explore what happens when you mix oil and water together, let’s get started.  While you’re at it, make sure to check out these other fun science experiments for kids.

Our science experiments are designed with you, the parent or teacher, in mind!  Easy to set up, quick to do, most activities will take only 15 to 30 minutes to complete and are heaps of fun!  Plus, our supplies lists usually contain only free or cheap materials you can source from home!

Here we have an easy oil and water experiment with a fishy theme!

ALSO CHECK OUT: Easy Science Experiments To Do At Home

OIL AND WATER SCIENCE EXPERIMENT

YOU WILL NEED:

  • Baby oil
  • Water
  • Large cup
  • Small cups
  • Food coloring
  • Dropper
  • Spoon
  • Toy fish (optional)

HOW TO SET UP WATER AND OIL EXPERIMENT

STEP 1. Fill the small cups with water.

STEP 2.  Add 2 to 3 drops of food coloring to each cup. Stir with spoon.  Notice what happens to the food coloring.

STEP 3. Next fill the larger cup with baby oil. You don’t need to fill it too full – halfway is fine.

STEP 4. Fill the dropper with the colored water.  Slowly drop the colored water into the cup of oil and watch what happens! Add the toy fish for some fun play!

Extend the activity by adding additional color drops such as yellow and watch the colors mix! The colors may start to mix at the bottom of the cup for a cool effect. 

WHAT HAPPENS WHEN YOU MIX OIL AND WATER?

Why don’t oil and water mix? Did you notice the oil and water separated? The water molecules attract each other, and the oil molecules stick together. That causes oil and water to form two separate layers.

Water molecules pack closer together so they sink to the bottom, leaving the oil sitting on top of the water. That’s because water is heavier than oil. Making a density tower is another great way to observe how not all liquids weigh the same.

Liquids are made up of different numbers of atoms and molecules. In some liquids, these atoms and molecules are packed together more tightly resulting in a denser or heavier liquid.

Want to see how to mix oil and water using a emulsifier? Check out our salad dressing activity.

Looking for easy science process information and free journal pages? 

We have you covered…

—>>> FREE Science Process Pack

MORE FUN SCIENCE EXPERIMENTS

OIL AND WATER EXPERIMENT FOR KIDS

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STEM activities for kids. The best resource for science activities and STEM challenges you will ever need. We have everything science including chemistry and physics for kids for ages 3-9. We even have slime science and homemade slime recipes. Simple and easy kids science experiments that make for fun science activities kids can't get enough of!