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Chemistry messes: Difference between revisions
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{{blc| Chemistry messes }}{{ct| Activity}} | ---- | ||
=== '''What You'll Need''': === | |||
# '''Hydrogen Peroxide''': | |||
#* Use at least 6% concentration for the best reaction. (You can find 12% or higher at beauty supply stores labeled as "developer.") | |||
#* Lower concentrations (3%) will work but won’t create as dramatic an effect. | |||
# '''Dish Soap''': | |||
#* Any liquid dish soap works, but more bubbly brands create more foam. | |||
# '''Food Coloring''': | |||
#* Choose a few fun colors for a vibrant effect (optional). | |||
# '''Yeast Catalyst''': | |||
#* One packet of dry yeast (or about 2 ¼ teaspoons). | |||
#* Warm water (about 2-3 tablespoons, at ~100°F / 37°C) to activate the yeast. | |||
# '''Other Materials''': | |||
#* A plastic bottle (a 16-20 oz soda bottle works great). | |||
#* A tray or large pan to catch the foam (or do it outside). | |||
#* Safety goggles and gloves (recommended for handling peroxide). | |||
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=== '''Instructions''': === | |||
# '''Prepare the Bottle''': | |||
#* Place the plastic bottle on a tray, in a large pan, or on a tarp outdoors. | |||
# '''Mix the Hydrogen Peroxide Solution''': | |||
#* Pour about ½ cup (120 mL) of hydrogen peroxide into the bottle. | |||
#* Add a generous squirt of dish soap (2 tablespoons) and swirl gently to mix. | |||
#* For a colorful explosion, add a few drops of food coloring to the inside walls of the bottle so the foam comes out striped. | |||
# '''Prepare the Yeast Catalyst''': | |||
#* In a separate small cup, mix one packet of dry yeast with about 2-3 tablespoons of warm water. Stir for about 30 seconds until it dissolves and becomes a slurry. | |||
# '''Create the Explosion''': | |||
#* Quickly pour the yeast mixture into the bottle and stand back! | |||
#* The reaction happens almost instantly, creating a dramatic foamy eruption that spills over the sides of the bottle like a volcano. | |||
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=== '''The Science Behind It''': === | |||
* '''Hydrogen Peroxide Decomposition''': The yeast acts as a catalyst to break hydrogen peroxide (H₂O₂) into water (H₂O) and oxygen (O₂). | |||
* '''Foam Formation''': The oxygen gas gets trapped in the dish soap, forming bubbles and creating an expanding foam. | |||
* '''Exothermic Reaction''': The reaction releases heat, so the foam will feel warm to the touch. | |||
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=== '''Tips for Success''': === | |||
* Use higher concentrations of hydrogen peroxide (12% or more) for a ''truly explosive'' eruption. | |||
* Scale it up by using a larger bottle and increasing the amounts of all ingredients proportionally. | |||
* Add glitter or small beads to the mix for an extra "wow" factor! | |||
---- | |||
=== '''Mess Level''': === | |||
HIGH! Foam will spill everywhere, so do this outside or use a tarp for easy cleanup. The foam is safe to touch but can be messy.{{blc| Chemistry messes }}{{ct| Activity}} | |||
=== 1. '''Elephant Toothpaste Explosion''' === | === 1. '''Elephant Toothpaste Explosion''' === | ||
