Leak-Proof Bag Science Experiment
A fun and educational experiment demonstrating pressure and surface tension using simple materials.
Ingredients
Materials
- 1 quart-size ziplock bag ziplock bag (quart-size)
- Water water Approximately 2/3 full
- 2 sharp pencils or wooden skewers Use these to poke the bag without leaks
- 1 tray or container To catch any spills
- Optional food coloring For added visual effect
Instructions
Preparation
- Take your ziplock bag and zip it open.
- Fill the bag with water, leaving some space at the top (around 2/3 full).
- Carefully seal the bag, ensuring there are no air bubbles trapped inside.
- Tip: Use a tray underneath for any spills during this process.
Execution
- With the bag filled and sealed, choose a sharp pencil or skewer.
- Slowly and gently poke the pencil into the bag.
- Observe how the water does not leak out, even with the pencil inserted! You can add more pencils to see the effect multiple times.
Notes
Customize by adding food coloring and exploring variations with different pointy objects. Ensure the bag is sealed tightly to prevent leaks.