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Is helium is pure or mixture?
Helium is a pure substance
Is helium gas substance or mixture?
Helium gas is a pure substance
Is helium gas a mixture or substance?
Helium gas is a pure substance
Is helium gas a pure substance or mixture?
Helium is pure as it is on the periodic table.
Is helium gas mixture or pure substances?
Helium gas is a pure substance
Is the helium in a balloon a substance or a mixture?
Helium is an element (and therefore a pure substance) yes
Is helium gas a homogeneous mixture or a heterogeneous mixture?
Neither. Helium is not a mixture at all, it is a pure substance.
Is helium gas a homogeneous mixture or heterogeneous mixture?
Neither. Helium is not a mixture at all, it is a pure substance.
Is helium gas a mixture?
No. Helium is an element, which makes it a pure substance.
Is helium a pure substance or a homogeneous or heterogeneous mixture?
Helium is an element which makes it a pure substance.
Is helium in a balloon a pure substance not a mixture?
In theory it is a pure element. However, due the the cost of obtaining really pure helium, it is likely to contain trace amounts of other gases.
Is helium heterogeneous mixture?
No, helium is a pure substance and an element to be more specific. It has a constant composition making it a pure substance and it is homoatomic (has only one type of atom) which makes it an element.
