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.
Organic Chemistry-Functional Groups. Edit 0 12 â¦. Definition: A Functional Group is a specific group of atoms which exists in a molecule and gives a molecule an ability to react in a specific manner or gives it special properties.Hydrocarbons have a limited range of properties and uses. Functional groups allow the additional of specific properties to a molecule.efinition: A Functional Group is a specific group of atoms which exists in a molecule and gives a molecule an ability to react in a specific manner or gives it special properties.