That would just be air, which is a mixture of different gases, including nitrogen, oxygen, carbon dioxide (particularly if you fill it by mouth), and trace amounts of other things.
Helium which is a lighter-than-air gas, allowing the balloon to float upwards.
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)
the balloon fills with gas
gas
It's a gas. The air molecules are free to move around anywhere in the balloon.
helium gas
A balloon filled with a gas that is less dense than water, such as helium or hydrogen, will float on water due to the buoyant force acting on it. The gas inside the balloon displaces an amount of water equal in weight to the balloon, causing it to float.
Helium gas is commonly used to make balloons float. Helium is lighter than air, so filling a balloon with helium makes it buoyant and able to float.
No, the density is too high.
Helium gas is commonly used to make balloons float because it is lighter than air and creates lift. The helium gas in the balloon is less dense than the surrounding air, causing the balloon to rise.
For a balloon to float in the air, it must be filled with a gas that is lighter than the surrounding air, such as helium or hot air. This creates a buoyant force that allows the balloon to rise and float.
When you stick a balloon to glass, it will not float on its own. The balloon will stick to the glass due to static electricity generated when rubbing the balloon against your hair or clothes. The balloon's ability to float is determined by the gas inside the balloon and the upward force it creates, not by sticking it to a surface.