Name:___________________________________ Grade & Sec.:_________ Score:_________

Teacher:__________________________________ Date:________________ Rating:________

Activity 1

Tracking the path and constructing the periodic table

Objectives:

After performing this activity, you should be able to:

1. trace the development of the periodic table; and

2. describe how the elements are arranged in the periodic table.

 masking or adhesive tapes

 element cards provided by the teacher (3 cm x 5 cm)

Procedure:

Part A

1. Element cards are posted on the board. The element’s properties and the

compounds it can form are listed in each card. As a class, go over each card. Notice

that the cards are arranged in increasing atomic mass. While keeping the order of

increasing atomic mass, put the elements with similar properties in the same column.

Q3. Are there any exception/s to these trends? If so, which elements break the

trend? Why did your group arrange these elements the way you did?

Q4. Are there any gaps in your arrangement? Where are they? What do you think

these gaps might mean?

Part B