If this compound is refined can be classified as a pure substance.
An element or a compound.
I believe it is an element.
Yes, purified water is classified as a pure substance. It is a pure substance because it does not have any contaminants.
The substance in the air is oxygen. Copper + oxygen= copper oxide.
All matter is a substance.
If this compound is refined can be classified as a pure substance.
Gold and Nitrogen are elements, not compounds of elements like "Air" or "Table Salt."
A pure substance is classified by having a definite and constant composition. The substance can be either an element or a compound, but what makes the substance pure, is that it does not vary.
Yes.
yes
Water is a compound, so it is a pure substance.
air is a substance because air is a gas and a gas is a substance.
Substance-Related Disorders
no
marijuana has been officially classified in the United States as a controlled substance in the same category as:
Air is not a pure substance.