Science for Kids: Layered Liquids

I’ve said it before, I love this book! It is full of great ideas for children’s science projects.

We have been very busy lately with my children’s school’s upcoming fundraiser that I just haven’t had the time or energy to be creative and to be honest it’s making me crazy. Time without doing projects makes me on edge. This weekend I finally had some moments of calm and we are back! We tackled a fun and MESSY project inspired by the Usborne book. The experiment is called Layered Liquids. The premise is simple, heavy liquids sink and lighter ones float, and you can magically “layer” them.

Layered Liquids


  • Jars
  • Cookie sheets
  • Molasses
  • Cold water
  • Food Coloring
  • Oil
  • Kosher salt
  • Spoons


  • Place the jar in the middle of a cookie sheet.
  • Pour some cold water into your jar and let the kiddos add some drops of food coloring.
  • Stir
  • Add about a 1/2 cup of oil to the jar. Tip: I let the kids hold the spoon/measuring cup while I poured in the liquids
  • Then add 1/4  cup or so of molasses to the jar
  • Since I know salt adds a bubbly gooey element when mixed with oil I let the kids put spoonfuls of kosher salt into the jars. It briefly created some lava lamp like bubble magic then sank to the bottom to form a sticky molasses/salt concoction. No matter the kids liked adding the salt the best! Go figure!
  • Let them experiment with stirring up the ingredients and watching them settle again.

Have fun!

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