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Worksheet
Curated OER

Empirical and Molecular Formula Sheet

For Students 10th - Higher Ed
In this formulas activity, students solve eight problems and are required to write the empirical and molecular formulas given percentage of elements or quantities in mass.
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Worksheet
Curated OER

Molecular Mass and Percent Composition

For Students 9th - 12th
In this molecular mass and percent composition instructional activity, students complete 5 sections where they determine atomic masses of given elements, they determine formula masses for given molecules, they find the molecular mass of...
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Worksheet
Curated OER

Molecular Mass and Percent Composition Worksheet

For Students 9th - 12th
In this molecular mass and percent composition worksheet, students find the molecular mass of 10 compounds to three decimal places. They also find the percent composition of 7 compounds and express their answers to two decimal places.
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Worksheet
Curated OER

Predicting Molecular Geometry and Hybridization

For Students Higher Ed
In this molecular geometry and hybridization worksheet, students identify bond angles, Lewis structures, hybridization, polarity and valance electrons in given molecules. They also label a drawn compound with hybridization and bond angles.
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Assessment
Curated OER

2007 U.S. National Chemistry Olympiad Local Section Exam

For Students 9th - 12th
Sixty multiple choice questions cover the entire gamut of chemistry concepts. This is the local section of the U.S. National Chemistry Olympiad, where your chemistry candidates take a shot at entering the national competition. They...
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Assessment
Curated OER

1999 U.S. National Chemistry Olympiad Part II

For Students 9th - 12th
A variety of topics including reaction rates, combustion reactions, periodic trends, and ionization reactions are included in this exam. Test takers also practice calculating empirical and molecular formulas of compounds.
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Assessment
Curated OER

2002 U.S. National Chemistry Olympiad National Exam - Part I

For Students 9th - 12th
As to be expected from the American Chemical Society Olympiad Examinations Task Force, this 60-question test tops the charts in terms of excellence. It consists entirely of multiple choice questions designed to assess a year's worth of...
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Worksheet
Curated OER

Ionic Compounds

For Students 9th - 12th
In this compounds worksheet, students review the structure and properties of ionic compounds, their formulas and nomenclature, and molecular mass and percentage composition. This worksheet has 4 short answer questions and 7 problems to...
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Interactive
Royal Society of Chemistry

Shapes of Molecules—Distortion from the Pure Geometry

For Students 6th - 12th
Ready to introduce the realities of molecular geometry to chemistry pupils? Use a logic-based interactive! Perfect as individual practice, the puzzles explore the bond angles and repulsions present in three common molecular shapes.
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Interactive
Concord Consortium

Electron Geometry

For Students 9th - 12th
It's time to whip your chemistry class into shape! Begin your study of molecular geometry with a colorful, 3-D interactive. The resource shows models of linear, trigonal planar, and tetrahedral molecules.
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App
Sunset Lake Software

Molecules

For Students 9th - Higher Ed
View molecular structure for various compounds with three-dimensional color images. 
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Lesson Plan
Curated OER

Lattice Energy

For Teachers 9th - 12th
A few basic facts about lattice energy are listed at the top of the page, including the formula used for calculations. Two charts follow: one for lattice energy and another for ion sizes. There is no work to do on this handout, but it...
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PPT
Curated OER

Empirical Formula

For Teachers 9th - 12th
Plenty of time was invested in creating this detailed presentation. The first slide alone includes several steps that support your explanation of percent composition, a precursor to understanding how to write empirical and molecular...
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Worksheet
Curated OER

Chapter 6 - Bonds

For Students 9th - 12th
Although there are only 16 questions here, this chemistry handout makes a terrific unit assessment. It queries youngsters on the properties of ionic and covalent compounds, relates bond length tho stability and enrgy, compares polar and...
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Worksheet
Curated OER

Chemistry 116 Exam 1, Spring 2009

For Students Higher Ed
This five-page exam was designed for a biochemistry and organic chemistry course. It covers the molecular geometry and properties of organic comounds. Test takers identify compounds, functional groups, and isomers. They draw Lewis...
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Worksheet
Bellevue College

Practice Drawing Lewis Structures

For Students 9th - 12th
Twenty-six elements, compounds, and ions are randomly listed for chemistry whizzes to analyze. They are to diagram the Lewis electron dot structure for each, resulting in further insight on the configuration of different molecules. They...
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Worksheet
Curated OER

Chemistry 116 Exam 2 Summer 2009

For Students 11th - Higher Ed
Written for an introductory organic and biochemistry course, this exam will challenge your class. They label functional groups and stereocenters on drawings of molecules, draw structures given the name, complete drawings of chemical...
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Worksheet
Curated OER

Organic Chemistry Problem Set Exam 1

For Students 11th - Higher Ed
Though there are technically only 13 questions on this exam, they take up six pages and make a thorough assessment of organic chemistry principles. There are plenty of diagrams to label or complete. Emission spectra are displayed for...
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Lesson Plan
Curated OER

Bonding Exercises

For Teachers 10th - Higher Ed
In this chemical compounds worksheet, students complete a graphic organizer by determining the electron dot formula, molecular shape, bond angle, bond polarity, and molecular polarity for 7 given compounds.
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PPT
Curated OER

Shapes of Molecules

For Teachers 10th - 12th
The VSEPR Model of molecular structure is exhibited through this series of slides. The step-by-step process is listed, and then examples are provided. The graphics give a visual display of the spatial relationship between the atoms of...
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Lesson Plan
Curated OER

Molecular Models Laboratory

For Teachers 10th - Higher Ed
Students use models to visualize molecular structures. Students read about Lewis dot structures, hybridization, and formal charge. Then students build and draw the molecules and ions given. Students complete 11 pre-lab questions and 4...
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Organizer
Curated OER

Naming Inorganic Compounds

For Students 9th - 12th
In this compounds worksheet, learners review how to name inorganic compounds and then complete 2 graphic organizers naming the cations and anions.
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Worksheet
Curated OER

Molecular Shapes

For Students 10th - 12th
In this molecular shapes worksheet, learners draw the Lewis structures of 15 compounds and polyatomic ions to complete the table.
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Interactive
Royal Society of Chemistry

Complex Ion Shapes

For Students 6th - 12th Standards
Things are really shaping up! Provide young chemists with polyatomic ion practice using an interesting interactive. Individuals complete puzzles focused on molecular geometry and complex ions.

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