Helium is an element. By definition, elements are the most basic building blocks of matter. Therefore, the only chemical in Helium would be Helium.
Carbon, Hydrogen and Helium
Air has many more different substances than helium, which is a single substance. Outside air contains helium.
Helium is an element (abbreviated "He"). Elements are types of substance that, when combined, form compounds and chemicals.
Helium does not react with any elements at normal circumstances because all the vacant spaces of the outer electron shell are filled. It will not normally give up or gain electrons but ions of helium may react with other elements.
The sun is made of mostly Hydrogen and Helium
Hydrogen and Helium
No, helium balloons are not radioactive. Helium is a non-toxic, inert gas often used to fill balloons because it is lightweight and does not react with other chemicals. It is safe for decorations and festivities.
The noble gases: helium, neon, argon, krypton, radon.
Stars contain hydrogen, helium and a little iron.
Sun contain hydrogen and helium and low concentrations of other elements..
Helium is lighter than air, so balloons filled with helium will float. It is also non-flammable and safe to use. Additionally, helium does not react with other chemicals, making it a popular choice for filling balloons.
Yes you can make hydrogen from water through electrolysis. And also from helium (this happens in the sun)