The memorizers

NH3(g) = ammonia

H2O(l) = water

H2S(g) = hydrogen sulfide

HF, HCl, HBr, HI = no prefixes

CH4(g) = methane

CH3OH(l) = methanol

C2H6(g) = ethane

C2H5OH(l) = ethanol

C6H12O6(s) = glucose

C12H22O11(s) = sucrose

O3(g) = ozone

H2O2(l) = hydrogen peroxide