No. Helium is an element, which makes it a pure substance.
Neither. Helium is not a mixture at all, it is a pure substance.
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)
Helium is an element
No - it is an element all in itself. An example of a gas mixture is carbon dioxide, made of a mixture of oxygen and carbon. So helium is just helium; nothing mixed in with it.
The lasing material in a helium-neon laser is a mixture of helium and neon gases. The neon gas is responsible for emitting the red laser light when excited by the helium gas.
Helium gas is a pure substance
Helium gas is a pure substance
Helium gas is a pure substance
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.
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)
Neither. Helium is an element
Helium is an element
element
No - it is an element all in itself. An example of a gas mixture is carbon dioxide, made of a mixture of oxygen and carbon. So helium is just helium; nothing mixed in with it.
The lasing material in a helium-neon laser is a mixture of helium and neon gases. The neon gas is responsible for emitting the red laser light when excited by the helium gas.
Neither. Helium is a noble gas mono atomic element.