It's a gas and gas likes to float.
Helium in a chemical element, and an inert gas. It does not want to be an electrical conductor, so it is considered an insulator.
It wasn't. The US was the biggest producer of helium, and didn't want to sell any to Germany. So they used Hydrogen, which is also light, but very flammable.
sucking in helium makes the pitch higher
If you want the balloons to float, you would probably use helium.
Yes, helium is lighter than nitrogen. Helium is the second lightest element, while nitrogen is a bit heavier due to its molecular structure. In fact, helium is the lightest noble gas and is commonly used in balloons for this reason.
Balloons are filled with helium. Helium is a gas that can make light objects float, or make your voice all squeaky. So if you want to pee your pants laughing, go cut a small hole in a balloon and suck the helium out and then speak.
To inflate a balloon to a desired size, we need to know the volume and required lift. Typically a 9-inch helium-filled balloon can lift about 8g of weight. If you want to increase the lift, you can add more helium.
Helium is an inert or noble gas from Group 18 of the periodic table. In general, it does not want to bond with anything else. It exists as a monatomic gas floating around in single-atom "units" and avoiding any bonding situations. Do not expect to see any helium-to-helium bonds when you investigate this curious element, the second most abundant one in the universe.
Any gas- but if you want them to SAFELY float, use helium.
He - Helium
No. helium gas inside the blimp keeps it aloft. Just like a helium makes balloons fly!!
Nope it's a gas. I'm pretty sure, you might want to check a periodic table.