WHERE’S AL



WHERE’S AL?

Question to answer upon completion of this activity:

How are physical and chemical properties used to place elements on the periodic table?

Materials:

“cousins” page scissors glue large sheet of paper

Procedure:

1. Cut out the cousins and place them in front of you.

2. Use clues from the letter below to arrange the cousins into their families.

3. One picture, Cousin Al, is missing. Once you determine his proper position, predict what he looks like and sketch him in the correct position.

4. When you are sure of the arrangement, glue or tape the pictures to a piece of paper.

5. Answer the discussion questions.

1234 Some Street

Anytown, Texas

Dear Cousin:

What’s happening? I’m writing because Grandmother has a favor to ask of you. She says you are the most artistic and most organized member of the family. I think she always did like you best. Anyway, here’s the deal.

Grandmother has collected pictures of all the grand kids. She wants you to make a collage by arranging the photos in rows from the smallest cousin to the largest cousin. She also said to tell you that kids who belong to the same family are dressed alike. Grandmother would like the members of each family arranged in their own vertical column. I hope you will understand what she means when you see the pictures.

By the way, I said she has a picture of everyone. Actually, she’s missing the picture of cousin Al. Grandmother says that, with your talent, you should be able to sketch what Al looks like because his features are similar to the cousins who surround him.

Got to go. In a way, I’m glad she does like you best! Good luck & don’t disappoint her!

Best Wishes,

Your Cousin

NAME ______________________________________

“WHERE’S AL?” CONCLUSION & DISSCUSSION QUESTIONS

1. What can the increase in size of the cousins be compared to on the periodic table? _________________________________________________________________________________________________________________________________________________________________________________

2. What does the number of arms represent from the periodic table? ________________________________________________________________________________________________________________________________________________________________________________________________

3. What property from the periodic table does the number of fingers on each hand indicate? ________________________________________________________________________________________________________________________________________________________________________________________________

4. Based on the periodic table, what does the number of hairs represent?

________________________________________________________________________________________________________________________________________________________________________________________________

5. Why are some cousins smiling while others are frowning? (HINT: think about gaining & losing valence electrons) ________________________________________________________________________________________________________________________________________________________________________________________________

6. Write the name of the element represented by each cousin beneath their picture on the “Cousin Table.” Base your answers on the periodic table and the information provided by answering the questions above.

7. Write three generalizations you can make about the way the periodic table is arranged. Use evidence from the lab to support your generalizations.

a. ______________________________________________________________________________________________________________________

b. ______________________________________________________________________________________________________________________

c. ______________________________________________________________________________________________________________________

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