Discuss phenol compounds, the general formula and specifically the use of phenol by Dr.Lister as an antiseptic in the mid 1800's. Introduce the amino group, how it its derived from ammonia, and the general formula for amines. Discuss some simple amine compounds and how they are named. Show the formula for aniline dye and amines produced when decomposition occurs in animals. Introduce the functional group for aldehydes, view the formula for formalin and discuss formaldehyde as a preservative