Rainbow in a Glass Experiment

Materials Needed:

• Sugar
• Water
• Food coloring (red, yellow, green, blue)
• Tablespoon
• 5 glasses
• Pipette or syringe

Procedure:

1. Prepare the Glasses: Fill 4 glasses with water, leaving one empty. Add 2-3 drops of different food coloring to each glass (red, yellow, green, blue).
2. Add Sugar: Add sugar to the glasses with yellow, green, and blue food coloring. Use 1 tablespoon for yellow, 2 for green, and 3 for blue. Stir until the sugar dissolves completely.
3. Create the Rainbow: Using the pipette or syringe, carefully layer the colored solutions into the empty glass, starting with the blue solution at the bottom and adding yellow on top. Avoid mixing the layers.

The Science Behind It:

• Density: Density is the measure of particles in a given volume. Adding sugar increases the density of water.
• Layering: The denser (more sugar) solution sinks to the bottom, while the less dense solution stays on top. This creates the layered rainbow effect.

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