PERIODICITY (THE PERIODIC TABLE)

Alvin Wilson                   Wendell Phillips High School
                               244 East Pershing Road
                               Chicago, IL 60653
                               1-312-924-8284       
                                                  
BEHAVIORAL OBJECTIVES:
 1.  Show the historical importance of the Periodic Table as a predictive device. 
 2.  Relate chemical properties of elements to their position in the Periodic 
     Table. 
 3.  Describe trends of the various properties in the Periodic Table.
 4.  Describe the idea that the periodicity of the elements is probably the most 
     important unifying principle in chemistry. 
 5.  List various families of elements along with specific similarities and 
     differences of properties within the families. 
 6.  Predict physical and chemical properties of elements by using the Periodic 
     Table. 
 7.  Predict oxidation numbers of elements through use of the Periodic Table. 

MATERIALS:
     Fruits, Spectrum Tubes, Graphing Paper, Rulers, Pencils, and Notebook Paper.  

STRATEGIES;
    In this hands on demonstration the students are told that Mr. Gluton a teacher 
of Sucron has recently visited a new planet called Fruton. Mr. Gluton was 
fortunate enough to be able to collect samples of the elements from Fruton.  The 
class will be given the task to arrange the elements according to any reoccurring 
properties.  At this point, the class interest is high and the manner of 
presentation has much to do with the effectiveness of the demonstration.  Mr. 
Gluton now opens a bag of 'elements' from this new planet called Fruton.  Out 
falls Apples, Oranges, Plums, Pears, Peaches, Grapes, Kiwi Fruit,  Pineapple, 
Lemons, Limes, Cantaloupe, Grapefruit, and Honeydew Melon. Using different sizes 
or types of fruit such as Apples, Pears, Peaches, Plums, Oranges, Limes, Bananas, 
Kiwi Fruit, Grapefruit, Cantaloupe, and Honeydew Melons students will be able to 
do the following; 
 1.  Differentiate between fruit types such as Apples, and  Oranges, which will 
     represent different groups of elements. 
 2.  Illustrate a family of elements by using differences in kind or type of 
     apples of various sizes, and colors. 
 3.  Illustrate seven other families of "A" group elements by using Citrus Fruits, 
     Pears, Plums, Kiwi Fruit, Bananas, Pineapple, Grapes, etc. 
 4.  Show the Periodic relationship that is apparent when groups are placed in 
     order of increasing sizes. 
 5.  Differentiate between elements by using Spectrum Tubes and individual 
     Diffraction Gratings. 
 6.  Show similar physical and chemical properties of the following elements:  
     Sodium, (Na); Potassium, (K); Magnesium, (Mg); and Calcium, (Ca). 
 7.  Show the Atomic Masses of individual elements, when given the Atomic Volumes 
     and their Densities. 
 8.  Describe how Dmitri Mendeleev, and Lothar Meyer arrived at their arrangement 
     of the chemical elements. 
 9.  Show how Dmitri Mendeleev was able to predict the physical and chemical 
     properties of the following elements: eka aluminum named gallium, eka boron 
     named scandium, and eka silicon named germanium. 
10.  Show how the Modern Periodic Table is being used today.