pure substance
a mixture
Aluminum is an element, a pure substance.
Pure substance.
Uranium is a natural chemical element, a pure element.
pure, its an element
Copper metal is an element and thus a pure substance.
Neither. Oxygen is an element, which is a pure substance and not a mixture.
It's an element. So, yes, it's a substance, not a mixture.
Silicon is an element. Its symbol is Si.
Pure sugar is a substance (compound).
quarts is a solid it is a pure substance and it is a element
Nickel is a chemical element, and as such, it is a pure substance.