Periodic Trends Investigation Lesson Plan & Worksheet Template
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4Activity: Periodic Trends Investigation
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Summary
Steve Smith
In this activity, students investigate trends in atomic radius, electron
Animas High School in
affinity, and ionization energy using an online interactive periodic
Durango, Colorado
table.
Thanks to:
PASCO
Resource Type
Grade Level
Activity
High school
Objectives
By the end of this lesson, students should be able to
•
explain the trends in atomic radius across rows and down columns of the periodic table.
•
explain the trends in electron affinity across rows and down columns of the periodic
table.
•
explain the trends in ionization energy across rows and down columns of the periodic
table.
•
explain the relationships between the above periodic trends.
Chemistry Topics
This lesson supports students’ understanding of
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Trends of the periodic table
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Atomic radius
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Electron affinity
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Ionization energy
Time
Teacher Preparation: No time
Lesson: 2.5 hours
Materials
For each group:
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Laptop with internet access
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Graph of atomic radius vs atomic number
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Graph of ionization energy vs atomic number
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Chart of first, second, and third ionization energies
Safety
There are no special safety considerations for this activity.
Teacher Notes
•
The tables and graphs needed for this activity can usually be found in a chemistry
textbook
F
S
OR THE
TUDENT
Student Activity Sheet: Periodic Trends Investigation
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