Helium is an element which makes it a pure substance.
Helium gas is homogenous.
Helium gas is homogenous.
Neither. Helium is not a mixture at all, it is a pure substance.
No. It will be a homogeneous mixture of gases.
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.
No, Helium is an element, and therefore homogeneous.
Helium is pure as it is on the periodic table.
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 will be a homogeneous mixture of gases.
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.
No, Helium is an element, and therefore homogeneous.
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.
Helium gas is a pure substance
Helium gas is a pure substance
H3Yit is amixture gas like helium ad hydrogen
Helium is a pure substance
Helium is pure as it is on the periodic table.
Helium is an element (and therefore a pure substance) yes