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.
Functional groups refer to specific atoms bonded in a certain arrangement that give a compound certain physical and chemical properties. Define the term functional group as it applies to organic molecules. Functional groups are often used to functionalize a compound, affording it different physical and chemical properties than it would have in its original form.