Review definition and chemistry of alkanes. Review the names and formulas of the first 5 alkanes in the series. Discuss the group formed when one hydrogen is removed from an alkane molecule. Determine that the formula for this addition group is CxH2x+1. Discuss the nomenclature of these addition groups, using the root name of the alkane and substituting yl for one at the end. Work a few nomenclature problems involving the addition of a methyl group to an alkane. Discuss the best methods for naming correctly.