Objectives: Describe the periodic table of elements and use it to find information about elements. Compare selected elements from the periodic table Explore families and periods on the periodic table. Procedure: Choose a family from the periodic table that you would like to learn about. Then, select several elements from that family, one at a time by clicking each element's box on the table. Open the table and record data about the element in the appropriate place in the table. Review the data you collected from the family of elements. Decide how the elements compare and record this information in your Journal. Repeat steps 1 and 2 with a period of elements. Click across a row of elements, one at a time. Observe what happens to the atomic number and record it in your Journal. Choose four elements from anywhere in the periodic table. Record their masses in the table. Explain how their masses relate to each other and their positions on the table and record this in your Journal. Explore the periodic chart in other ways. Use your Journal to make valid generalizations about the periodic table.