"Aspirin" can be used as a chemical term for the compound acetyl salicylic acid. What is commonly called an "aspirin tablet", however, is a mixture of that active ingredient with other materials.
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
Silicon is an element. Its symbol is Si.
pure substance
Pure Substance
Air is not a pure substance.