Floating Egg Experiment Steve Spangler Science

Eggs sink in regular tap water, but creating a saltwater solution… that's an egg-citingly different story.

The Floating Egg Experiment at Steve Spangler Science

How do you make an egg float? With the Floating Egg Experiment from Steve Spangler Science, your students or kids will get a hands-on demonstration in this super-fun science experiment that they’ll remember long after the experiment is over! You’ll test out different variables, make observations and come to scientific conclusions when finished. This science experiment is perfect for kids of all ages.

Experiment Materials

  • Two drinking glasses
  • Two raw eggs
  • Table salt
  • Spoon

Experiment Videos



Fill one of the drinking glasses almost to the top with plain tap water.


Gently drop one of the eggs into the water-filled glass. It sinks right to the bottom!


Fill the second drinking glass half-full with water.


Add four tablespoons of table salt to the water, and stir. Fill the rest of the cup with water, almost to the top.


Gently place the second egg into the saltwater solution…


It floats!

How Does It Work

Did you know that eggs sink in regular tap water? But what about salt water? Well, that’s an egg-citingly different story! Why do eggs float in regular tap water but float when salt is added? This is the question you will answer with our Floating Egg Experiment.

Other Options

Steve Spangler Science has demonstrated how different kinds of sodas either sink or swim in plain tap water with our Sinking Soda Surprise science experiment. We’ve even shown that bowling balls can float in the exciting science experiment called Floating Bowling Balls. So, what’s the deal with eggs? Drop as many eggs into plain tap water as you want and they will all sink to the bottom. In this Floating Egg Experiment, we’ll show you how the addition of something as simple as table salt can drastically alter what happens to eggs in water.

Steve Spangler Science: Inspiring the Next Generation of STEMologists

We’re excited about STEM subjects at Steve Spangler Science — and it shows! From our frequent appearances on the Ellen DeGeneres Show to our elementary science school tours across the country, we operate with one goal: to inspire the next generation of STEMologists. Steve Spangler Science is a trusted source for parents and educators as a resource and a reference for exciting, at-home science experiments that use everyday home items to create a BIG impression. Each of our science experiments for kids brings that special WOW factor that will inspire kids of all ages to learn more, ask questions and be inquisitive about the world around them. Don’t miss our other at-home experiments, at-home all-in-one kits and our huge online experiment library that features the biggest and the best Steve Spangler Science experiments!