Fluorine is certainly a substance, it is an element.
xylene is a mixture of ortho, meta and para methyl substituted toluene.
F2 is an element, specifically a molecule of fluorine gas. It is not a mixture because it is a pure substance composed of only one type of atom bonded together.
An element - substance - NOT a mixture.
a mixture is not a substance
a mixture is not a substance
Fluorine was obtained by the hydrolysis of a mixture of KF2 and HF.
No, it is a mixture; rarely a drug is a pure substance.
Fluorine is a gaseous element which exists as diatomic molecules and every element is a pure substance.
Fluorine is a chemical substance - a halogen.
a mixture
pure substance?
It is a mixed substance. ---------------------------------------------- It is a mixture