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Fizzing Lava Rocks

Create your own fizzing lava rocks with this fun and easy science craft that combines creativity and chemistry. Perfect for parties or educational activities.
Prep Time 15 minutes
Total Time 1 day
Course Craft, Science Activity
Servings 1 batch

Ingredients
  

Main Ingredients

  • 1 cup baking soda
  • 1/4 cup white vinegar Can substitute with apple cider vinegar
  • 2 tablespoons dish soap
  • Food coloring (optional) For customizing colors
  • Silicone molds For shaping the lava rocks
  • Tray or shallow dish For containing the mess
  • Spoon for mixing
  • Baking sheet (for drying, optional) If baking to speed up drying

Instructions
 

Preparation

  • Lay down newspaper or an old cloth to protect surfaces.
  • Gather all materials and have them within reach.

Mixing Ingredients

  • In a bowl, combine 1 cup of baking soda and 2 tablespoons of dish soap.
  • Stir the mixture until it’s well combined and crumbly.
  • If using food coloring, add a few drops to the dry mix and blend it to achieve your desired color.

Shaping the Lava Rocks

  • Using your hands or a spoon, fill the silicone molds with the mixture, packing it tightly to hold its shape.

Drying

  • Let the filled molds sit for about 24 hours to dry. Alternatively, you can bake them in a low oven for about 30 minutes to speed up the process.

Eruption Preparation

  • Once dry, gently remove your lava rocks from the molds, placing them on a tray or shallow dish.

Erupting

  • When you’re ready for the fun, pour a little white vinegar over the lava rock and watch the eruption begin!

Notes

You can add essential oils to the mixture for a fragrant twist, or use glitter for a sparkly effect.
Keyword Chemical Reactions, Creative Activity, Fizzing Lava Rocks, Hands-on Learning, Science Craft