Part one of term paper
is known as the most important tool in a chemical laboratory.The elements in are classified into groups or families. provides an easy way to show the divission of the elements into acid-forming and base-forming types.It is also a universal table. is filled whith many virtues in which I will explain some in the following paragraphs. Elemen ...

Part two of term paper
... in keeping with gradual increase in atomic weights. Rather, the properties change gradually through a certain number of elements, called a "period" of elements. Then they repeat, through the next period. To express this, Mendeleev stated the periodic law: The properties of the elements are periodic functions of the atomic weights. provides an easy way to show the division of the elements into acid-forming and base-forming types. Those on the left are base-forming; those on the right are acid-f ...