noun. any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids.
noun. an oily colorless liquid obtained by the condensation of two molecules of acetaldehyde; contains an alcohol group (-OH) and an aldehyde group (-CHO).
1. Adjective The reason for this is that the straight chain has an alcohol group at one end and an aldehyde group at the other. 2. Noun, singular or mass An aldehyde has a hydrogen to lose but it is connected to a carbon molecule and carbon never likes to drop its hydrogens.
