They are gases
Helium, hydrogen, and air are gases.
The correct term, or state is gas, just like helium
air is the matter of gases because they are the same thing
Helium in a balloon is in a gaseous state. Helium is a light, non-toxic gas that is less dense than air, which is why it causes balloons to float.
No. Air is a mixture mainly of nitrogen, oxygen and argon; the only four states of matter are solid, liquid, gas and plasma.
Nitrogen and Helium
Air is about 79% (volume) Nitrogen (N2). It is a gas at atmospheric conditions.
Helium is lighter (less dense) than oxygen & nitrogen.
Balloons filled with helium rise because helium is lighter than the surrounding air, which is primarily composed of nitrogen and oxygen. The buoyant force acting on the helium-filled balloon is greater than the weight of the balloon, causing it to ascend. In contrast, balloons filled with nitrogen, which is almost the same density as air, do not rise because they do not displace enough air to create a buoyant force.
Helium is significantly less dense than both oxygen and nitrogen, the major components of air. The density of helium is about 0.1785 grams per liter, while nitrogen is approximately 1.2506 grams per liter and oxygen around 1.429 grams per liter. This difference in density is why helium-filled balloons rise in the atmosphere; they are buoyant in the denser air composed mainly of nitrogen and oxygen.
Air has many more different substances than helium, which is a single substance. Outside air contains helium.
Better check on that again, helium is lighter than air and the specific gravity of air is approximately 1.3 milligrams per cubic centimeter. Water weighs much more than air, 1 gram per cubic centimeter.