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.
Facts On Functional Groups. A functional group is a group of atoms responsible for the characteristic reactions of a particular compound. There are seven main functional groups we've learned about this year. They are the hydroxyl group, carboxyl group, carbonyl group, amino group, sulfhydryl group, methyl group, and phosphate group.