6-9 Chemistry - Periodic Table

In 1869, a Russian scientist named Dmitri Mendeleev made a chart of the known elements.  The chart is called the Periodic Table of the Elements.  Every country uses the same Periodic Table.

Elements in the Period Table are arranged in order of their atomic numbers.

Click here to look at the Periodic Table.

Hydrogen has an atomic number of 1.  It is the lightest element.  Aluminum (Al) has an atomic number of 13.

Each row across the Periodic Table is called a period.  All the elements listed in a row belong to the same period.

Each column in the Periodic Table is called a group, or family, of elements.  All of the elements in a group have many similar properties.

Elements can be divided into two groups - metals and nonmetals.  There are more metals than nonmetals.  Hydrogen is in two places in the Periodic Table because it can act as a metal or a nonmetal.

Directions: Answer the questions about the Periodic Table of Elements.

1. The Periodic Table was put together in the year .

2. Each element is given a number called its .

3. An atomic number has to do with the of the element.

4. Elements in the same row across belong to the same

  period
  group or family

5. Elements in the same up-and-down column belong to the same

  period
  group or family

Use the Periodic Table to answer the following questions.

6. Metalloids are listed on the side of the Periodic Table

7. Alkaline Earth are listed on the side of the Periodic Table?

8. Are there more metals or nonmetals on the Periodic Table?

  Nonmetals
  Metals

9. Transition metals are located in the of the table.