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Mentos Rainbow Explosion Experiment is where science and display collide in a burst of vibrant colors! In this experiment, we will explore the fascinating reaction between Mentos and soda as it transforms an ordinary beverage into a rainbow fountain that will leave you both educated and entertained.

Through hands-on exploration and observation, we will discover how the texture and composition of Mentos trigger a rapid and powerful release of carbon dioxide, resulting in an exhilarating and visually stunning display. So, grab your safety goggles, and get ready for a wild ride filled with fizzy fun. Prepare to be dazzled and inspired as STEM science experiments come alive in a kaleidoscope of colors right before your eyes!

Mentos Explosion Experiment – Mentos Geyser

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What ingredients are needed for the Mentos Explosion Experiment?

• 5 (2 liters) bottles of Fanta in 5 different flavors
• 5 sleeves Mentos candy
• 1 ¼ cup clear dishwashing liquid
• Food coloring (for enhanced dolor)
• 1 ¼ cup vinegar
• 1 ¼ cup baking soda
• Party cups
• Video camera or smartphone with video (for replay)

Note: Measurements for the dishwashing liquid, vinegar, and baking soda are approximate.

Directions:

In order to analyze the results, have a video camera or smartphone with video capabilities available to capture the experiment.

Prepare the candy by removing it from the sleeve and placing one sleeve of candy into each cup.

Add ¼ cup baking soda to each cup with the Mentos.

Pour equal amounts of each different Fanta into its own cup.

To each cup of Fanta, add ¼ cup of dishwashing liquid and vinegar. Also, add drops of matching food coloring.

Simultaneously, drop the candy into the Fanta.

TIP: Use a level surface so the bottles don’t fall over.

What causes the Coke and Mentos eruptions?

The rapid and explosive reaction between Coke and Mentos candies is caused by a combination of factors. When Mentos candies are dropped into the carbonated beverage, they provide numerous nucleation sites—tiny pits and crevices on their rough surface—where carbon dioxide gas molecules can gather and form bubbles. Additionally, Mentos candies are coated with a substance called gum arabic, which lowers the surface tension of the liquid and allows the carbon dioxide to be released more rapidly. This sudden release of carbon dioxide creates a powerful eruption, shooting the liquid and foam high into the air in an exciting and visually stunning display.

Any safety precautions to consider during the Mentos Explosion experiment?

When conducting any experiment involving the eruption of carbonated beverages, it is important to prioritize safety. Here are some safety precautions to consider:

• Wear appropriate clothing, including safety goggles, to protect your eyes from any splashes or debris. It is also a good idea to wear old clothes that you don’t mind getting dirty.

• Perform the experiment outdoors or in a well-ventilated area to avoid inhaling any potentially harmful fumes or releasing excessive pressure indoors.

• Ensure that you have enough space around you to safely conduct the experiment without any obstacles or hazards nearby.

• Place a stable and flat surface, such as a table or the ground, to perform the experiment. Make sure it’s a surface that can withstand any potential spills or stains.

• Stand a safe distance away from the carbonated beverage bottles during the experiment to avoid any potential injury from the rapid expulsion of liquid.

• If children are involved in the experiment, ensure that they are supervised by responsible adults who are familiar with the procedure and can provide guidance on safety.

Mentos and Soda Science Fair Project