Ghostly Air Pressure Bags
Supplies:
- Resealable zip-top bags (quart or gallon size)
- 1/4 cup baking soda
- 1/2 cup vinegar
- Small paper towel or tissue
- Black permanent marker (to draw ghost faces on bags)
- Tray or outdoor space (to contain the mess)
Directions:
1. Draw spooky ghost faces on the front of each zip-top bag with a marker.
2. Pour 1/2 cup vinegar into the bottom of the bag.
3. Place 1/4 cup baking soda in the center of a small piece of paper towel and fold into a packet.
4. Quickly place the baking soda packet inside the bag, keeping it above the vinegar while sealing the bag tightly.
5. Shake the bag gently so the baking soda packet drops into the vinegar.
6. Step back and watch as the bag fills with carbon dioxide gas, inflates like a ghostly balloon, and may even pop!