Use the drop-down menus to classify each of the compounds. A chain of 3 carbons, with H above, below, and to the left, and O H to the right. H N bonded above right to C H 3, and below right to C H 2 bonded to C H 3. A chain of 3 carbons is bonded to H to the left, and above and below the first 2 carbons; the third is double bonded above right to O and single-bonded below right to O bonded to H.