Helium is pure as it is on the periodic table.
Helium gas is a pure substance
Helium gas is a pure substance
Pure. (gas)
Helium gas is a pure substance
nitrogen gas is BASICALLY JUST PLAIN NITROGEN AND THUS IT IS A PURE SUBSTANCE.
Yes, hydrogen gas is a pure substance because it consists of only hydrogen atoms. It is a homogeneous mixture of identical molecules, making it a pure substance.
Oxygen is an element indicating that is a pure substance.
Yes, it is a pure substance but can be mixed with other gases.
It is a gas and it doesn't really have a pure substance that you can see.
No, hydrogen gas is a pure substance.
It is an element so pure substance...Roll Tide