All is revealed in the related question below.
No. Helium does not react at all.
Common compounds for helium include helium-3 (He-3) and helium-4 (He-4), which are isotopes of helium. Helium is typically chemically inert and does not readily form compounds with other elements under normal conditions.
Because helium is an unreactive chemical element.
Yes, helium does have mass. Helium is a chemical element and all elements have mass.
All stars contain hydrogen and helium.
The helium atoms move quickly in all directions. This is cap
Helium 2 protons 2 electrons
Helium is the second lightest element. Helium has the lowest boiling point among all the elements. It is chemically inert.
The pressure that there would be if all the non-helium atoms and molecules were taken away.
Neither. Helium is not a mixture at all, it is a pure substance.
Neither. Helium is not a mixture at all, it is a pure substance.
Helium - and other noble gases - hardly react at all.