Arts & Crafts
Fizzing Sidewalk Paint Bombs
The child will create sealed plastic bags containing a colored paste and vinegar that, when thrown, burst and create a fizzy, colorful splatter on the pavement.
Grab 1–2 things 25 min Ages 4–9 years 1–4 players Outdoor
Fine motor skillsCause and effect reasoningColor mixingFollowing multi-step directions
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Learning benefits
- 💡 Measuring the baking soda and cornstarch builds proficiency with fractions and units, while carefully spooning the paste into the bag develops hand-eye coordination. Observing the bag inflate and then fizz upon impact provides a tangible, memorable lesson in the acid-base chemical reaction that produces carbon dioxide gas.
Safety notes
- ⚠️ Ensure this activity is performed outdoors, as the bursting bags can create a mess. The mixture is non-toxic, but avoid aiming the quart-size sealable plastic bags at people, pets, or windows. Liquid food coloring can stain, so wear old clothes that can get messy.
Cleanup
- 🧹 The fizzing paint residue of baking soda and cornstarch can be washed off the pavement with a garden hose. Dispose of the used quart-size sealable plastic bags in the trash. Wash the small bowls, spoons, and measuring cups with soap and water.