To help students learn the appropriate text structures, text features, and language of informative/explanatory writing, teachers might begin with Talk-alouds. Below you will see two 2nd grade examples that focuses on the use of diagrams. These are a paired set of a Reading Talk-aloud and a Writing Talk-aloud.
functional group. n. An atom or group of atoms, such as a carboxyl group, in an organic compound that defines the structure of a family of compounds and determines the properties of the family. functional group. n.
The carbonyl functional group is based on the ketone group. It has the formula RCOR'. The prefix for this group is keto-or oxo-or its suffix is-one. Ben Mills. Definition: the term carbonyl refers to the carbonyl functional group which is a divalent group consisting of a carbon atom with a double-bond to oxygen.Carbonyl also may refer to a compound formed by a metal with carbon monoxide.he prefix for this group is keto-or oxo-or its suffix is-one. Ben Mills. Definition: the term carbonyl refers to the carbonyl functional group which is a divalent group consisting of a carbon atom with a double-bond to oxygen. Carbonyl also may refer to a compound formed by a metal with carbon monoxide.