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The Periodic Table Beginning of 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 w .... Middle of Paper .... 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-forming. Those in between can be either. They have so-called amphoteric oxides and hydroxides that can act like acids or bases. 's arrangement also divides the elements into metallic and nonmetallic kinds. A distinction is usually made between most pure metals and nonmetals according to physical and chemical properties. Another virtue of is that it is universal. No matter where it is u .... 340 words | 2 pages Subscription Length Price Join 30 days membership (recurring) $19.95 90 days membership (recurring) $39.95 180 days membership (non-recurring) $69.95