Introduction to the Periodic Table

In any classroom where chemistry is taught there is a big chart called the periodic table, and we also have one in my classroom’s wall. This week the real chemistry began, and I learned the organization of chemical elements. The periodic table has 118 boxes, which contains a symbol and number of the element. The boxes are place in horizontal order of increasing number (they are called a proton or atomic number). Also, the elements are place in vertical way called groups, which mean they have similar chemical properties. The first group has the name alkali metals; the second group is called alkaline earth metals. Next we have couples groups of transition metals, metalloids group, chalcogens, halogens, and noble gases group. In an easier way, we can divide all the elements on metal and not metal.

Below there are two pictures.

1. The elements classified as metals and as nonmetals.

2. The more specified organization of the elements