hydrocarbon molecules (set)

2butene acetylene alkane alkyl atoms benzene biphenyl carbon chemical compound computer cyclobutane cyclohexane cyclopentadiene cyclopentane cyclopropane diesel dimensional ethane ethylene formula gas isobutane isopentane mesitylene methane methyl methylacetylene model molecular molecule nbutane nheptane nhexane noctane npentane naphthalene neopentane oil paraffin petrol propane propylene structural structure styrene toluene two xylene