Lab Partner 1 Name_________________________ Lab Partner 2 Name_________________________ Your team may not consist of more than 2 people. Graphing Periodic Trends The Periodic Table is arranged according to Periodic Law. The Periodic Law states that when elements are arranged in order of increasing atomic number, their physical and chemical properties show a periodic pattern. These patterns can be discovered by examining the changes in properties of elements on the Periodic Table. The properties that will be examined in this lesson are: atomic size, ionic radius, electronegativity, and ionization energy. Procedure Graph 1 For elements 1-36 make a graph of atomic radius as a function of atomic number. Plot atomic number on the X-axis and the atomic radius on the Y-axis. Use a colored pen or pencil to draw a vertical line that represents the beginning of each period. Graph 2 For elements 1-36, make a graph of the ionization energy. Plot atomic number on the X-axis and ionization energy on the Y-axis. Use a colored pen or pencil to draw a vertical line that represents the beginning of each period. Graph 3 For elements 1-36, make a graph of the ionic radius. Plot atomic number on the and the ionic size on the Y-axis. Use a colored pen or pencil to draw a vertical line that represents the beginning of each period. Graph 4 For elements 1-36, make a graph of the electronegativity. Plot atomic number on the X-axis and the electronegativity on the Y-axis. Use a colored pen or pencil to draw a vertical line that represents the beginning of each period. Questions Define the following terms: Period Group (Family)
Lab Partner 1 Name_________________________ Lab Partner 2 Name_________________________ Your team may not consist of more than 2 people. Graphing Periodic Trends The Periodic Table is arranged according to Periodic Law. The Periodic Law states that when elements are arranged in order of increasing atomic number, their physical and chemical properties show a periodic pattern. These patterns can be discovered by examining the changes in properties of elements on the Periodic Table. The properties that will be examined in this lesson are: atomic size, ionic radius, electronegativity, and ionization energy. Procedure Graph 1 For elements 1-36 make a graph of atomic radius as a function of atomic number. Plot atomic number on the X-axis and the atomic radius on the Y-axis. Use a colored pen or pencil to draw a vertical line that represents the beginning of each period. Graph 2 For elements 1-36, make a graph of the ionization energy. Plot atomic number on the X-axis and ionization energy on the Y-axis. Use a colored pen or pencil to draw a vertical line that represents the beginning of each period. Graph 3 For elements 1-36, make a graph of the ionic radius. Plot atomic number on the and the ionic size on the Y-axis. Use a colored pen or pencil to draw a vertical line that represents the beginning of each period. Graph 4 For elements 1-36, make a graph of the electronegativity. Plot atomic number on the X-axis and the electronegativity on the Y-axis. Use a colored pen or pencil to draw a vertical line that represents the beginning of each period. Questions Define the following terms: Period Group (Family)
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