The Periodic Table The Periodic Table Periodic Table Song by Mr. Parr Ch. 8 Sect. 1

Periodic Table:  Table of elements, arranged by atomic number that shows the patterns in their properties.

Before the Periodic Table  Messy  No organization of elements  Difficult to find Information  Chemistry didn’t make sense.  Missing elements and information

Dimitri Mendeleev  Father of the Periodic Table  How his worked:  He put elements in rows by increasing atomic number.  Organized elements in columns by the way they react.  Some Problems:  Left blank spaces for undiscovered elements.  Broke the pattern of increasing mass to keep similar reacting elements together.

Current Periodic Table  Now elements are pit unto rows by increasing atomic number.  Horizontal rows are called periods or series. They are labeled 1-7.  Vertical columns are called groups or families. They are labeled

Period (series)  Horizontal rows on the chart that are labeled 1-7.  Element properties change in a predictable way from one end of the periodic table to the other

Group (Family)  Vertical columns on the chart that are labeled1-18.  Elements in the same group have similar chemical and physical properties.  Same number of valence electrons form same kinds of ions.  Families:  may be one column, or several columns put together.  Families have names rather than numbers

Complete the Periodic Table Basics Poster Step 1: Complete the squares for each element by adding the atomic number, name, and atomic mass. Step 2: Determine the number of protons, neutrons, and Electrons in each element. Step 3: Create a Bohr Diagram for each element. 5 B Boron Step 5: Cut the cards apart and arrange according to atomic number in the pattern shown below. Once you have the cards arranged in the correct order, glue them to a large sheet of construction paper. Step 4: Use the following colors to shade in the square for each element. You should ONLY color in the small square in the upper left-hand corner and not the entire card.