Make a Model of a Periodic Pattern
Every 29.5 days, the Moon begins to cycle through its phases from full moon to new moon and back again to full moon. Events that follow a predictable pattern are called periodic events. What other periodic events can you think of?
On a blank sheet of paper, make a grid with four squares across and four squares down.
Your teacher will give you 16 pieces of paper with different shapes and colors. Identify properties you can use to distin- guish one piece of paper from another.
Place a piece of paper in each square on your grid. Arrange the pieces on the grid so that each column contains pieces that are similar.
Within each column, arrange the pieces to show a gradual change in their appearance.
Think Critically In your Science Journal, describe how the properties change in the rows across the grid and in the columns down the grid.
Preview this chapter’s content and activities at bookk.msscience.com
Periodic Table Make the following Foldable to help you classify the elements in the periodic table as metals, nonmetals, and metalloids.
Fold a vertical sheet of paper from side to side. Make the front edge about 1.25 cm shorter than the back edge.
Turn lengthwise and fold into thirds.
Unfold and cut only the top layer along both folds to make three tabs. Label each tab as shown.
Find Main Ideas As you read the chapter, write information about the three types of elements under the appropriate tabs. Use the information in your Foldable to explain how metalloids have properties between those of metals and nonmetals.
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