CK-12 Foundation
Ck 12: Periodic Trends
[Free Registration/Login may be required to access all resource tools.] In the following online tutorail students will use the Periodic Table to identify and explain periodic trends, including atomic and ionic radii, electronegativity,...
Web Elements
Web Elements Periodic Table: Electronegativity
Chart of Pauling electronegativity values versus atomic number. Colorful, pictorial explanation of this periodic trend.
Science Education Resource Center at Carleton College
Serc: Periodic Trend Game: Learning to Predict Elements Using Periodic Trends
An activity to introduce the periodic table and the trends. Students will understand the organization of the periodic table with this game.
Other
University of South Carolina: Periodic Trends
PowerPoint presentation that describes sizes of atoms in terms of isoelectric series as well as periodic trends. Includes information about sizes of ions and allows you to practice some problems on your own. Go to the index to choose...
Sophia Learning
Sophia: Periodic Trends: Atomic Radius: Lesson 3
This lesson will explain how the atomic radius changes over representative elements across rows and up and down columns on the periodic table. It is 3 of 3 in the series titled "Periodic Trends: Atomic Radius."
Sophia Learning
Sophia: Periodic Trends: Ionization Energy: Lesson 3
This lesson will explain how the ionization energy changes over representative elements across rows and up and down columns on the periodic table. It is 3 of 3 in the series titled "Periodic Trends: Ionization Energy."
Sophia Learning
Sophia: Periodic Trends: Atomic Radius: Lesson 2
This lesson will explain how the atomic radius changes over representative elements across rows and up and down columns on the periodic table. It is 2 of 3 in the series titled "Periodic Trends: Atomic Radius."
CK-12 Foundation
Ck 12: Chemistry: Periodic Trends: Atomic Radius
[Free Registration/Login may be required to access all resource tools.] Defines atomic radius and explains trends in atomic radius.
CK-12 Foundation
Ck 12: Chemistry: Periodic Trends: Ionization Energy
[Free Registration/Login may be required to access all resource tools.] Explains ionization energy, trends in ionization energy, and electron shielding.
CK-12 Foundation
Ck 12: Chemistry: Periodic Trends: Electronegativity
[Free Registration/Login may be required to access all resource tools.] Defines electronegativity and explains trends in electronegativity.
CK-12 Foundation
Ck 12: Chemistry: Periodic Trends: Atomic Radius
[Free Registration/Login may be required to access all resource tools.] Defines atomic radius and explains trends in atomic radius.
CK-12 Foundation
Ck 12: Chemistry: Periodic Trends: Electronegativity
[Free Registration/Login may be required to access all resource tools.] Covers electronegativity definition and trends in electronegativity.
CK-12 Foundation
Ck 12: Chemistry: Periodic Trends: Ionization Energy
[Free Registration/Login may be required to access all resource tools.] Explains ionization energy, trends in ionization energy, and electron shielding.
Frostburg State University
General Chemistry Online: The Periodic Table
This is a teacher's companion guide with lesson plans for the periodic table. It includes learning objectives, lecture notes, links to related sites, answers to frequently asked questions, and a glossary of related terms.
Michael Blaber, PhD
Florida State Univ.: Periodic Properties of the Elements: Ionization Energy
Exceptional article from the Florida State University that will take you from start to finish. This article will answer all your questions about ionization energy as both a concept and trend.
Web Elements
Web Elements Periodic Table: Ionization Energy
This WebElements site allows you to create a periodic table that shows the relative ionziation energies of all elements. Great visuals!!
Simon Fraser University
Chem1 Virtual Textbook: Periodic Trends in Ion Formation
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses electron affinity and ionization energy in relation to ion formation. Charts and graphs are included as well.
Sophia Learning
Sophia: Periodic Trends: Atomic Radius: Lesson 1
This lesson will explain how the atomic radius changes over representative elements across rows and up and down columns on the periodic table. It is 1 of 3 in the series titled "Periodic Trends: Atomic Radius."
Sophia Learning
Sophia: Periodic Trends: Electron Affinity: Lesson 3
This lesson will explain how the electron affinity changes over representative elements across rows and up and down columns on the periodic table. It is 3 of 3 in the series titled "Periodic Trends: Electron Affinity."
Other
University of South Carolina: Ionization Energy
First slide in a thorough presentation of ionization energy from a trend to an explanation of isoelectric series. Gives you practice problems as well.
Google
Google for Education: Example: Patterns in the Periodic Table
A lesson plan where students examine the trends in the periodic table.
Texas Education Agency
Texas Gateway: Periodic Table Trends
Given descriptions, scenarios, or groups/series of elements, students will use the Periodic Table to relate the size of the atomic radii, electronegativity, and ionization energy of elements to their position on the chart. Students will...
ClassFlow
Class Flow: Periodic Table Trend
[Free Registration/Login Required] This flipchart helps students learn about the periodic trend of Atomic Radius of Elements across a Period and down a Group.
CK-12 Foundation
Ck 12: Trends in the Periodic Table
[Free Registration/Login may be required to access all resource tools.] Students investigate specific properties that can be predicted by an element's position on the periodic table. Additionally, they will look at the formation of ions,...
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