Groups with a Carbon-Oxygen Double Bond (Carbonyl Groups) Aldehyde:one hydrogen bonded to C=O Ketone:two C's bonded to the C=O Carboxylic acid:-OH bonded to the C=O Ester:C-O bonded to the C=O Amide:C-N bonded to the C=O Acid chloride:CI bonded to the C=O ■Carbonyl C has partial positive charge(δ+) Carbonyl O has partial negative charge(5-).Groups with a Carbon–Oxygen Double Bond (Carbonyl Groups) „ Aldehyde: one hydrogen bonded to C=O „ Ketone: two C’s bonded to the C=O „ Carboxylic acid: ⎯OH bonded to the C=O „ Ester: C-O bonded to the C=O „ Amide: C-N bonded to the C=O „ Acid chloride: Cl bonded to the C=O „ Carbonyl C has partial positive charge ( δ+) „ Carbonyl O has partial negative charge ( δ-)