Description
A fun and simple science experiment using oil, water, and salt to demonstrate density and solubility. Watch as salt carries oil into water, creating an erupting, lava-like effect.
Ingredients
1 cup room temperature water
¼ cup vegetable oil
Table salt or rock salt
A clear glass or jar
Optional: food coloring
Spoon
Instructions
Pour 1 cup of room temperature water into a clear glass jar.
Slowly pour ¼ cup of vegetable oil over the water. Let it settle for a few seconds.
Sprinkle a spoonful of salt over the oil. Watch it sink, carrying oil with it into the water.
As the salt dissolves, the trapped oil bubbles rise, creating an erupting effect.
Repeat with small spoonfuls of salt to continue the eruptions.
Optional: Add food coloring before the oil for extra visual impact.
Notes
Try different types of salt or temperatures of water to see how the reaction changes. Always supervise young children and clean up with warm water and dish soap.
- Prep Time: 5 minutes
- Cook Time: 0 minutes
- Category: Science Experiment
- Method: No-cook
- Cuisine: Educational