Argon can be used instead of Helium and is preferred for certain types of metal. Helium is used for lots of lighter than air applications and Hydrogen is a suitable replacement for many where the flammable nature of Hydrogen is not an issue.
0:032:31HOW TO | Make Balloon Float Without Helium? - YouTubeYouTubeStart of suggested clipEnd of suggested clipJust simply place a small pieces of glued on tape or double-sided tape on the top of the balloon.MoreJust simply place a small pieces of glued on tape or double-sided tape on the top of the balloon. Where it is gonna stick on the ceiling.
Pour two teaspoons of baking soda into your balloon, and pour half a cup of acetic acid into the bottle. Don't add too much soda! Insert the bottleneck into the balloon's neck and straighten the balloon: the baking soda in the balloon will fall into the bottle and meet the vinegar.
2:287:59How To Make A Balloon Arch Without Helium - YouTubeYouTube
You need a gas that is lighter than air to float the balloon, which is why we use helium. Helium is the result of the very long, very slow decay of radioactive atoms like uranium. Currently, this natural process is the only method with which helium is produced on Earth. In other words: You cannot make your own helium!
1:443:29Make a Balloon Rocket - YouTubeYouTube
0:163:48How To Make a Balloon Arch for Your Party - YouTubeYouTube
Rockets (and jet engines) work much like a balloon filled with air. If you fill a balloon with air and hold the neck closed, the pressure inside the balloon is slightly higher than the surrounding atmosphere.
What You Do:Tie one end of the string to a chair or doorknob across the room from you.Blow up a round balloon a couple of times to get it stretched out. Then blow it up and pinch the end closed so no air can escape. Thread the straw onto the free end of the string. Hold the string taut and then let go of the balloon.
2:114:17DIY Balloon Arch (Super Easy Hack!) - YouTubeYouTube
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