Top 20 Density Science Experiments

Welcome to our compilation of the top 20 density-related science experiments, specially curated for teachers and students.

Density, a fundamental concept in physics and chemistry, unveils the mysteries of why some objects float while others sink, and why certain liquids form layers instead of mixing.

These hands-on, enlightening experiments, suitable for learners across different age groups, promise to not only solidify your understanding of density but also kindle a burning passion for the intricacies of the physical world.

So, let’s plunge into the world of density-based science experiments!

1. Sink or Float?

Salt and Water

In this experiment, students will explore the concept of density by investigating whether grapes, when placed in different concentrations of salt sh the power of centrwater, will float or sink.

Learn more: Salt and Water Density Experiment

2. Why Salt Water and Fresh Water Don’t Mix

By carefully pouring freshwater into a container of saltwater, students can observe the formation of distinct layers instead of immediate mixing.

3. Seven-Layer Density Column Experiment

Explore the fascinating world of density with the captivating “Seven-Layer Density Column Experiment.”

In this experiment, students will have the opportunity to create a mesmerizing column of liquids, each layer resting on top of the other based on its density.

4. Ocean Zone Jar

This captivating activity allows students to create a visually stunning representation of the ocean’s different zones.

5. Salt Volcano

Salt Volcano

Ignite your curiosity and unleash your inner scientist with the thrilling “Salt Volcano” experiment. In this exciting activity, students will create a volcanic eruption using just a few simple ingredients.

Learn more: Salt Volcano

6. Sugar Density Experiment

Indulge in the sweet world of science with the intriguing “Sugar Density Experiment.” In this experiment, students will explore the concept of density using various concentrations of sugar solutions.

7. Ocean Science

Ocean Science

Dive into the fascinating world of ocean science with captivating activities specially designed for kids. From marine life to ocean currents, there’s a wealth of knowledge waiting to be discovered.

Learn more: Ocean Science for Kids

8. Underwater Color Explosions

Immerse yourself in a captivating underwater world with the mesmerizing “Underwater Color Explosions” experiment. In this visually stunning activity, students will explore the principles of density and chemical reactions by creating vibrant bursts of color in water.

9. Cork Sailboat

Set sail on a thrilling adventure with the “DIY Toy Sailboat” project. In this exciting hands-on activity, students can unleash their creativity and engineering skills by building their own toy sailboat.

10. Make a Water Strider

Experience the wonders of surface tension with the fascinating “DIY Water Strider” project. In this engaging activity, students can create their own water strider, a fascinating insect that glides effortlessly across the surface of water.

11. Build a Bottle Centrifuge

Unleash the power of the centrifugal force with the thrilling “Build a Bottle Centrifuge” project. In this hands-on experiment, students can create their very own centrifuge using simple materials found around the house.

12. Aluminum Foil Boat

Get ready to set sail on a buoyant adventure with the “Aluminum Foil Boat” project. In this captivating hands-on experiment, students can construct their own boat using just a sheet of aluminum foil.

13. Waves in Slow Motion

Waves in Slow Motion

Experience the mesmerizing beauty of waves in slow motion with this captivating science experiment. By trying this experiment, students can observe and study the intricate movements of waves in a relaxed and detailed manner.

Learn more: Waves in Slow Motion

14. Lava Lamp

Ignite your creativity with the captivating “DIY Lava Lamp” experiment. In this mesmerizing activity, students can create their own mini lava lamp using simple household materials.

15. Floating and Sinking Soda Pop Cans

Floating and Sinking Soda Pop Cans


Dive into the intriguing world of buoyancy with the “Floating and Sinking Soda Pop Cans” experiment. In this exciting hands-on activity, students will explore the concept of density by investigating why some soda cans float while others sink in water.

Learn more: Floating and Sinking Soda Pop Cans

16. Burning Candle Density Experiment


Uncover the fascinating relationship between density and combustion with the “Burning Candle Density Experiment.” In this captivating science exploration, students can witness the impact of heat and combustion on the density of air.

17. Density Sensory Bottles

Density Sensory Bottles


Engage your senses and explore the concept of density with the captivating “Density Sensory Bottles” experiment. This hands-on activity allows students to create their own sensory bottles filled with materials of different densities.

Learn more: Density Sensory Bottles

18. Floating Egg Science

Floating Egg Science

Discover the wonders of buoyancy and density with the captivating “Floating Egg Science” experiment. This hands-on activity allows students to explore the principles of density and observe how it affects the floating or sinking of an egg in different liquids.

Learn more: Floating Egg Science

19. Raincloud in a Jar

Unlock the mysteries of density and cloud formation with the captivating “Rain Cloud in a Jar.” This experiment not only introduces the concept of density but also provides a practical demonstration of how clouds are formed in the atmosphere.

20. Exploring Density Marble Race

Exploring Density Marble Race

Embark on an exciting adventure of speed, motion, and density with the thrilling “Exploring Density Marble Race” experiment.

Learn more: Exploring Density Marble Race

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