{"id":54071,"date":"2025-10-09T04:38:01","date_gmt":"2025-10-08T19:38:01","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=54071"},"modified":"2025-10-09T04:38:01","modified_gmt":"2025-10-08T19:38:01","slug":"boiling-point-power-the-stunning-science-behind-the-self-inflating-bag","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=54071&lang=en","title":{"rendered":"Boiling Point Power: The Stunning Science Behind the Self-Inflating Bag"},"content":{"rendered":"

Hi, I’m Ken Kuwako, your Science Trainer. Every day is an experiment!<\/strong><\/p>\n

Have you ever heard of the “Magic Bag”? It’s a mysterious bag that spontaneously inflates when you place it in hot water\u2014without you doing anything else! The truth is, this isn’t magic at all; it’s a display of pure science. The secret, the setup, and the materials are all incredibly simple. Today, I’m going to show you a science experiment you can easily do at home that is guaranteed to have a huge visual impact. Come and experience the astonishing moment a liquid instantly transforms into a gas!<\/p>\n

Preparation and Instructions<\/b><\/h3>\n

Everything you need for this experiment is easily found around the house or at a local store.<\/p>\n

What you’ll need:<\/b><\/p>\n

    \n
  • A polyethylene food storage bag (ziplock bags are the most convenient)<\/li>\n
  • Anhydrous ethanol (Can be purchased at drugstores or online)<\/li>\n
  • An electric pot\/multicooker (or a portable induction cooktop and a pot)<\/li>\n
  • Hot water (around 90\u00b0C \/ 194\u00b0F)<\/li>\n<\/ul>\n

    Instructions:<\/b><\/p>\n

      \n
    1. Pour only a tiny amount (about 5 ml) of ethanol into the storage bag. Squeeze out the excess air, and seal it tightly.<\/li>\n
    2. Fill the electric pot with water and heat it to 80\u201390\u00b0C (176\u2013194\u00b0F).<\/li>\n
    3. Once the water is warm, carefully place the sealed bag containing ethanol into the pot.<\/li>\n
    4. Observe as the bag dramatically inflates right before your eyes!<\/li>\n<\/ol>\n

      *Please be extremely careful to avoid burns. Using tongs to place the bag into the hot water is a safer way to handle it.<\/p>\n

      Watch the Experiment Here!<\/b><\/h3>\n