Unit Plan
Texas Education Agency

Texas Gateway: Ionic Bonds: Electron Dot Formulas

For Students 9th - 10th
Given descriptions, diagrams, scenarios, or chemical symbols, students will model ionic bonds using electron dot formulas.
PPT
Other

Chemical Bonds: Formal Charges

For Students 9th - 10th
A slide presentation with several slides dedicated to the topic of formal charges. Formal charges are explained, and examples are given. A practice example is provided.
Interactive
PBS

Pbs Learning Media: Molecular Shapes

For Students 9th - 10th
In this interactive activity from ChemThink, students will learn about covalent molecules and how the VSEPR theory predicts the shapes of covalently-bonded molecules.
Lesson Plan
Science Education Resource Center at Carleton College

Serc: Combustion or Oxidation

For Teachers 9th - 10th
Students burn a magnesium strip to reinforce the concepts of chemical vs. physical changes, reaction types, conservation of mass, formulas and equations, stoichiometry, Lewis structures, and to explore the concept of oxidation/reduction...
PPT
Other

Chemical Bonds: Electronegativity

For Students 9th - 10th
A slideshow with several slides dedicated to electronegativity, the trend which is illustrated in the slide at this link. Others slides explain how the electronegativity can be used to determine bond character.
Handout
University of Florida

University of Florida: General Chemistry I: Chemical Bonding

For Students 9th - 10th
Notes on covalent bonding, bond length, bond energies, Lewis dot structures, and percent ionic character. Colorful graphics.
Handout
Other

Washington University: Polyatomic Ions

For Students 9th - 10th
This page from the Department of Chemistry at Washington University provides attractive Lewis dot diagrams and three-dimensional models for many of the common polyatomic ions. The images will make your visit worthwhile.
Handout
Michael Blaber, PhD

Fsu: Basic Concepts of Chemical Bonding: Exceptions to the Octet Rule

For Students 9th - 10th
Lists the exceptions to the octet rule and provides a discussion and diagrams explaining each one. Includes clear diagrams illustrating this concept.
Interactive
CK-12 Foundation

Ck 12: Plix Series: Resonance: Ozone Resonance

For Students 9th - 10th
[Free Registration/Login Required] Explore resonance by manipulating the electrons and bonds, and then answer a challenge question about the concept.
Handout
Chem Tutor

Chem Tutor: Bonds in General

For Students 9th - 10th
A summary of bonding terms and the importance of electrons in bonding.
PPT
Other

Organic Chemistry: Octet Rule

For Students 9th - 10th
This slide presentation contains a description of the octet rule, as well as many related topics.
Handout
Towson University

Towson University: Shapes of Molecules

For Students 9th - 10th
This chemistry class printout details the main points of molecular geometry and explains bond hybridization and bond angles.
Activity
Texas Instruments

Texas Instruments: Geometries and Polarities of Compounds

For Teachers 9th - 10th
In this StudyCard activity, students are asked to describe the geometry and polarity of several molecules and ions. Geometries covered include linear, bent, trigonal planar, trigonal pyramidal, and tetrahedral. Students will need to have...
Unknown Type
Khan Academy

Khan Academy: Solubility Equilibria Questions

For Students 9th - 10th
This is a 10-question quiz pertaining to solubility equilibrium.
Handout
Clackamas Community College

Clackamas Community College: Octete Rule

For Students 9th - 10th
This resource offers a brief description of the Octet rule, along with a quick practice, and answers to the exercise.
Handout
Other

Chemistry 112: Properties of Acetic Acid

For Students 9th - 10th
Here is a Lewis dot structure diagram of acetic avid, as well as a few properties of this compound.
Graphic
Library of Congress

Loc: Map Collections 1500 2002

For Students 9th - 10th
This collection provides maps dating back to 1500 up to the present. The collection includes: cities, towns, discovery and exploration, conservation and environment, military battles, cultural landscapes, transportation, communication,...
Unit Plan
CK-12 Foundation

Ck 12: Ions

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] In this lesson, students learn ways to predict what type of ion a given element is likely to form.

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