it is a pure substance.... not
Methane is a pure substance.
Helium is pure as it is on the periodic table.
Silicon is an element. Its symbol is Si.
Pure substance
No, it is a pure substance; it is an element
Pure krypton gas currently costs about US $33 per 100 grams. This means that a milligram of the substance would cost roughly 3.3 cents.
pure form
yes it is.
No. Krypton gas is an element and therefore a pure substance.
pure substance, propanone
it is a pure substance.... not
Pure substance
A pure substance is the same throughout. When a substance is 100% something it is pure.
Methane is a pure substance.
Helium is pure as it is on the periodic table.
silicon is a pure substance because it is an element and as we know an element is a pure substance