Dancing Raisins: Fill a glass with carbonated water and drop a few raisins into it. The carbon dioxide bubbles will attach to the raisins, causing them to float and dance in the water.

Elephant Toothpaste: Mix hydrogen peroxide, dish soap, and yeast in a bottle. The yeast acts as a catalyst, causing the hydrogen peroxide to decompose rapidly and release oxygen gas. This creates a foamy eruption that resembles toothpaste.

Mentos and Soda: Drop a few Mentos candies into a bottle of soda. The candies have a rough surface that helps to break the surface tension of the soda, causing a rapid release of carbon dioxide gas. This results in a geyser-like eruption of soda.

Lava Lamp: Fill a clear container with water and add oil, food coloring, and an effervescent tablet (such as Alka-Seltzer). The tablet reacts with the water, creating bubbles that rise through the oil and create a mesmerizing lava lamp effect.

Magic Milk: Pour milk into a shallow dish and add a few drops of food coloring. Then, dip a cotton swab in dish soap and touch it to the milk. The soap disrupts the surface tension of the milk, causing the food coloring to swirl and create beautiful patterns.

Fireproof Balloon: Blow up a balloon and hold it over a lit candle. The balloon will not burst because the rubber is a poor conductor of heat. This demonstrates the concept of heat transfer and the insulating properties of certain materials.

Invisible Ink: Write a message using lemon juice or milk on a piece of paper. Once the juice or milk dries, the message becomes invisible. To reveal the message, heat the paper by holding it close to a light bulb or iron. The heat causes the juice or milk to oxidize and darken, making the message visible.

Baking Soda and Vinegar Volcano: Create a volcano shape using clay or playdough and place it on a tray. Fill the volcano crater with baking soda and pour vinegar into it. The vinegar reacts with the baking soda, producing carbon dioxide gas and creating a volcanic eruption.

Rainbow Fire: Sprinkle a small amount of various metal salts (such as copper sulfate, potassium chloride, or strontium chloride) onto a flame. Each metal salt will produce a different colored flame, creating a beautiful rainbow effect.

Oobleck: Mix cornstarch and water to create a non-Newtonian fluid called Oobleck. It behaves like a liquid when poured slowly, but becomes solid when pressure is applied. This demonstrates the concept of viscosity and the unique properties of certain substances.