Camphor is a crystalline substance.
Camphor is a sublimable substance, so it sublimes after some time when exposed to air...
it is a pure substance.... not
Methane is a pure substance.
Helium is pure as it is on the periodic table.
Camphor is a crystalline substance.
Camphor is a sublimable substance, so it sublimes after some time when exposed to air...
pure substance, propanone
Co2(s) will sublime
it is a pure substance.... not
Pure substance
Methane is a pure substance.
A pure substance is the same throughout. When a substance is 100% something it is pure.
Helium is pure as it is on the periodic table.
Silicon is an element. Its symbol is Si.
silicon is a pure substance because it is an element and as we know an element is a pure substance
pure substance