Are these all examples of ions?

here's simple way tell: ions have charge. atoms/molecules charge on list f- , no3-, ions. other ones--ethanol, ammonia, , hydrogen--are neutral, they're not ions (but doesn't mean can't have ammonium, nh4+, ion, or hydrogen ion [proton], h+).
simplest way tell: ions have little "-" or "+" after formula, denotes having "unbalanced" charge. in atoms/molecules/compounds aren't ions, charges of protons (+) , electrons (-) "cancel out," atoms can gain or lose electrons through various processes , ions formed. (the number of protons *not* change from, say, lone sodium atom lone sodium ion.)

hey wondering these examples of ions.
c2h6o
nh3
f-
h2
no3-

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