Polymerization is the method of creating a synthetic polymer by combining many small monomer molecules into chain held together by covalent bonds. There are two major forms of polymerization, step growth polymerization, and chain growth polymerization. 1  The main difference between the two types of polymerization is that in chain growth polymerization, monomer molecules are added to the chain one at a time.
United States Common Sense is a non-partisan non-profit policy group dedicated to opening government data and resources to the public, developing data-driven policy analysis, and educating citizens about how their governments work. Â© 2018 United States Common Sense. All Rights Reserved.
As of December 15, 2015, the U.S. is $18.8 trillion in debt. Who owns the U.S. debt? There are two basic categories of debt owners: 1) the public, which includes foreign investors and domestic investors and, 2) federal accounts, also known as intragovernmental holdings.. Each category is explained below.