Pdf Printable Periodic Table 195469 | Siglab Close Encounters Of The Periodic Kind

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Signature Lab
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8 Grade Science
Close Encounters of the Periodic Kind—Teacher Pgs Unit 4
45 Minutes

Objective
 The student will be able to discuss and explain what a family and a period are on the Periodic
Table of Elements.
 The student will be able to correctly arrange the Aliens in the proper families and periods based
up on the Periodic Table of Elements.
 The student will be able to identify the number of electrons in the three energy levels of each
Alien.
 The student will be able to define and explain a valence electron.
 The student will be able to interpret and explain any square on the Periodic Table of Elements.

TEKS
 8.5A—Describe the structure of atoms, including the masses, electrical charges, and locations of
protons and neutrons in the nucleus and electrons in the electron cloud;
 8.5B—Identify that protons determine an element’s identity and valence electrons determine
its chemical properties, including reactivity
 8.5C—Interpret the arrangement of the Periodic Table, including groups and periods, to explain
how properties are used to classify elements

Guiding Questions
1. How is the Planetary Exchange Student yearbook page similar to the Periodic Table?
The Planetary Exchange Student yearbook page looks like the Periodic Table.
The yearbook page has families and groups.
The students in groups have the same number of arms, as atoms in groups have the same
number of energy levels.
The Noble Gases are located to the far right.
The fingers of the students represent electrons.
The student ID number is the atomic number.

2. How would you find the number of protons by looking at the Periodic Table?
The number of protons is equal to the atomic number, or on this model, the student ID number.

3. What are the limitations to this model of the Periodic Table?
Answers will vary

4. How did you recognize what students belonged to each family?
They had the same clothing on and the same number of antenna

5. How did you recognize the number of energy levels?
The number of arms each student had was the amount of energy levels an atom would have.

6. How can you find the number of valence electrons by using this model?
The number of valence electrons was the number of fingers found on the last arm.

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8 Grade Science Close Encounters – Teacher Page 1

Signature Lab
th
8 Grade Science
Close Encounters of the Periodic Kind—Teacher Pgs Unit 4

Materials
 Glue  Scissors
 Construction Paper  Planetary Exchange Student Pictures
 Editor’s Letter  Periodic Table of Elements

Teacher Notes
 Students will take on the roll of the yearbook staff at Sharpcity Middle School.
 They have lost the yearbook picture of one of their 18 planetary exchange students from
Periodic Middle School located on the planet Elementville.
 They cannot retake the picture of the student because all the planetary exchange students have
already returned home. However, they have found pictures of the 17 planetary exchange
students.
 Students must arrange the pictures of the remaining planetary exchange students on the blank
yearbook page to determine which student’s picture are missing.
 They must use the characteristics of the remaining planetary exchange students to draw the
portrait of the missing alien.
 The portrait must fit in the sequence of the remaining planetary exchange students.

Teaching Procedure
 Split students into groups of 3-4.
 Have students read the letter from Sharpscity’s yearbook editor.
 Give each group a copy of the periodic table.
 Students should study the pictures of the seventeen Planetary Exchange Students.
 Have students cut out the pictures of the Planetary Exchange Students and arrange them on the
blank yearbook page.
 Students will use the Periodic Table of Elements to place the Planetary Exchange Students in the
correct order on the blank yearbook page.
 Students will leave an open space for the Planetary Exchange Student’s portrait that was lost.
 Students will write the correlating number from the yearbook page in the blank square on each
portrait.
 The students will come to the teacher for permission before gluing the Planetary Exchange
Students’ pictures in the correct order.
 Once they have glued the students in the correct order, they will draw the portrait of the
missing Planetary Exchange Student.
 Students will then number the families and periods using the Periodic Table as a guide.
 Students will complete the yearbook Statistic Page by filling in the chart for each Planetary
Exchange Student.
 Students will answer the conclusion questions.

Follow Up
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 Review the students’ drawings of the 19 student (element), and have them share their
design with other students.
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8 Grade Science Close Encounters – Teacher Page 2

Signature Lab
th
8 Grade Science
Close Encounters of the Periodic Kind—Teacher Pgs Unit 4
1. What is the name of the fifteenth Planetary Exchange Student?

Phosphorus

2. What is the atomic number of the student named Beryllium?

Four

3. How many protons would the seventh Planetary Exchange Student have?

Seven

4. How many Planetary Exchange families are represented?

Eight

5. To which family does the missing Planetary Exchange student belong?

The Third

6. How many electrons does it take to fill the 1st, 2nd, and 3rd energy levels?

Two, Eight, Eight

7. How many electrons are in each level for student thirteen?

st
1 —2
nd
2 —8
rd
3 —3

8. What is a valence electron?

A valence electron is an electron located in the outer energy level of an atom.

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8 Grade Science Close Encounters – Teacher Page 4

Signature Lab
th
8 Grade Science
Close Encounters of the Periodic Kind—Teacher Pgs Unit 4

9. How many valence electrons does student eight have?

Six

10. How many valence electrons does student six have?

Four

11. List all of the students that have a full outer energy level.

Two—Helium
Ten—Neon
Eighteen—Argon

12. What two things helped you place each student in a family?

The number of antenna and the clothing they were wearing.

13. What would the nineteenth Alien look like? Draw a portrait below. Include everything that
other Alien family members have.

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8 Grade Science Close Encounters – Teacher Page 5

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...Signature lab th grade science close encounters of the periodic kind teacher pgs unit minutes objective student will be able to discuss and explain what a family period are on table elements correctly arrange aliens in proper families periods based up identify number electrons three energy levels each alien define valence electron interpret any square teks describe structure atoms including masses electrical charges locations protons neutrons nucleus cloud b that determine an element s identity its chemical properties reactivity c arrangement groups how used classify guiding questions is planetary exchange yearbook page similar looks like has students have same arms as noble gases located far right fingers represent id atomic would you find by looking at equal or this model limitations answers vary did recognize belonged they had clothing antenna was amount atom can using found last arm materials glue scissors construction paper pictures editor letter notes take roll staff sharpcity mi...

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