Both hydrogen and helium are gaseous elements that are not as dense as the nitrogen and oxygen in air, and can be used to fill balloons to make them lighter-than-air. Helium is the least reactive of the two, and therefore safer to use.
Helium gas is lighter than air and hence balloons filled with helium will float in air.
Foil balloons are filled with helium. Helium is lighter than air and because of this, it is one of the gases that can make a balloon float. It's the preferred gas for these type of balloons because it isn't flammable and is inert, meaning undesired chemical reactions are rare.
Yes.
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 density of a helium balloon is less than that of the surrounding air. This is why helium balloons float in the air. Helium is lighter than the nitrogen and oxygen that make up the majority of Earth's atmosphere, so it provides buoyancy for the balloon.
Yes, a helium-filled balloon will float in the air because helium is less dense than the surrounding air. When filled with helium, the balloon experiences a buoyant force that causes it to rise and float.
Helium gas is lighter than air and hence balloons filled with helium will float in air.
Balloons are usually filled with helium gas to make them float. Helium is lighter than air and provides the necessary lift for the balloon to float.
I am not sure what you mean by 'depend' (please try and make your questions clear) but if you mean does the fact that a helium filled balloon will float (or rise) depend on gravity? Then the answer is Yes. if you were to take a helium filled balloon to the space station and release it inside, it would not rise, it would behave just the same as if you released a bunch of keys.
Helium goes into a balloon to make it float.
A balloon filled with oxygen, like any other gas, will only float if it is less dense than the surrounding air. The weight of the balloon, the gas inside, and the container itself typically make the balloon denser than the air, causing it to sink. A helium-filled balloon floats because helium is much lighter than air.
Heating the air inside a hot-air balloon decreases its density, causing it to become lighter than the surrounding cooler air. This buoyant force generated by the temperature difference causes the balloon to float upwards.
Helium is the gas commonly used to fill balloons to make them float. If a balloon is filled with a gas heavier than air, such as carbon dioxide or nitrogen, it will cause the balloon to drop instead of float.
A typical hot air balloon is filled with the same air we breath.
A hot air balloon is called such because it is filled with hot air to make it rise. When the air inside the balloon is heated, it becomes less dense than the surrounding cooler air, causing the balloon to float upwards.
Foil balloons are filled with helium. Helium is lighter than air and because of this, it is one of the gases that can make a balloon float. It's the preferred gas for these type of balloons because it isn't flammable and is inert, meaning undesired chemical reactions are rare.
Helium gas is most commonly used to fill balloons to make them float. Helium is lighter than air, which causes the balloon to rise and float.