Gas. Helium is a gas.
No, it is a gas-solid mixture when view as a whole. It has a solid component (the balloon itself), and a gas component (the helium)
A helium "balloon" is composed of two parts: the SOLID rubber balloon skin, and the GASeous helium. So the balloon part itself is a solid.
gas
Inside a balloon there is gas. This gas is normally helium if you want the balloon to fly high, but hydrogen also works.
Balloon is a solid because it has a definite shape when we blow or don't blow air into it.
It was made out of the light gas gas Helium.
Helium. The helium gas in the balloon is lighter than the air outside the balloon.
Helium
A helium balloon is made by filling a latex or mylar balloon with helium gas, which is lighter than air, causing the balloon to float. The helium gas is sealed inside the balloon, allowing it to stay afloat for a period of time before slowly deflating.
Helium is typically pumped into balloons because it is lighter than air and gives the balloon its ability to float.
Helium goes into a balloon to make it float.
Helium which is a lighter-than-air gas, allowing the balloon to float upwards.