All substances are made of basic particles called  atomsbondscompoundelectronselementsformulagroupsnucleuspropertiessharingsymbolstransferring. Substances that are made of only one sort of atom are called  atomsbondscompoundelectronselementsformulagroupsnucleuspropertiessharingsymbolstransferring. The periodic table is laid out so that vertical columns of elements with similar  atomsbondscompoundelectronselementsformulagroupsnucleuspropertiessharingsymbolstransferring form so-called  atomsbondscompoundelectronselementsformulagroupsnucleuspropertiessharingsymbolstransferring of like elements.
Atoms have small central  atomsbondscompoundelectronselementsformulagroupsnucleuspropertiessharingsymbolstransferring around which there are moving  atomsbondscompoundelectronselementsformulagroupsnucleuspropertiessharingsymbolstransferring. When atoms react, new chemical  atomsbondscompoundelectronselementsformulagroupsnucleuspropertiessharingsymbolstransferring are formed that hold the atoms together. Bonds are formed by atoms  atomsbondscompoundelectronselementsformulagroupsnucleuspropertiessharingsymbolstransferring (giving or losing/taking or gaining, ) or  atomsbondscompoundelectronselementsformulagroupsnucleuspropertiessharingsymbolstransferring electrons. In a chemical  atomsbondscompoundelectronselementsformulagroupsnucleuspropertiessharingsymbolstransferring elements are represented by chemical  atomsbondscompoundelectronselementsformulagroupsnucleuspropertiessharingsymbolstransferring. When different elements chemically combine together a  atomsbondscompoundelectronselementsformulagroupsnucleuspropertiessharingsymbolstransferring is formed.