Sure http://ehs.ucdavis.edu/sftynet/sn-63.cfm: Ozone is a very reactive form of oxygen gas.
OK, but this is not written specifically for chemists, and you were after a chemist's opinion. Is this the article that you are discussing? If so then the description is probably good enough for a general audience.
I think ozone is an allotrope of oxygen.
If I asked a chemist for oxygen cylinder I would no doubt get O2.
If I wanted ozone I would need to specifiy, ozone.
Oxygen gas means dioxygen.
True enough. I was however expecting a rigorous scientific logic in terminology not chemist's day to day jargon! Naturally oxygen means dioxygen, not only for a chemist asking for an oxygen cylinder but a welder, diver, nurse or anybody else for that matter. Logically however if ozone and dioxygen are both allotropes of oxygen then an oxygen molecule can be either. Whether the molecule is solid, liquid or gaseous is of course irrelevant.
No this is not an article we were discussing. Somebody just made the statement as an example of a scientific truth that's all!
How about the following postulate: All crystalline sulphur molecules are composed of 8 atoms, resulting in a protest because there exists a sulphur allotrope with 7 atoms also in crystaline form. Could one then say that crystalline sulphur is understood to mean the 8 atomic allotrope being the most common and this is what you get if you order sulphur?
I suppose judging by this I'd better accept that things are not always logical even in science
No wonder school kids get confused...
Thanks anyway for answering me!