eBook
Crescent Public Schools

The Internet Science Room: Chemical Formulas

For Students 9th - 10th
This illustrated tutorial serves as a foundation for understanding chemical formulas in chemistry.
Handout
Simon Fraser University

Chem1 Virtual Textbook: Working With Formulas

For Students 9th - 10th
As part of the "Basic Atomics" section of the Virtual Textbook, this site examines formulas and how they are read and written. Other topics covered include a concept map, simplest formulas, and masses.
Handout
eSchool Today

E School Today: Elements, Compounds, Substances and Mixtures

For Students 6th - 8th
Learn about the classification of matter based on whether the chemical composition is pure or a mixture. Understand the definitions of elements, compounds, substances, and mixtures, and what the differences are between them. Five types...
Handout
Science Struck

Science Struck: Baking Soda: Chemical Formula, Preparation, and Uses

For Students 9th - 10th
Baking soda has a variety of uses, including for household cleaning and for baking. Read about its chemical formula and its common reactions.
Graphic
American Chemical Society

Middle School Chemistry: What Is a Chemical Reaction?

For Students 9th - 10th
Use chemical formulas to visualize how chemical equations are balanced.
Handout
Simon Fraser University

Chem1 Virtual Textbook: Simplest Formulas From Experimental Data

For Students 9th - 10th
As part of the "Basic Atomics" section of the Virtual Textbook, this site a variety of topics related to simplest formulas including simplest formulas from atom ratios, simplest formulas from mass composition, and more.
Lesson Plan
Alabama Learning Exchange

Alex: Balancing Chemical Reactions

For Teachers 9th - 10th
Students will participate in a guided inquiry activity using manipulatives to learn how to balance chemical reactions. This activity was developed in cooperation with Michelle Holdbrooks at Thompson High School...
Unit Plan
CK-12 Foundation

Ck 12: Hydrocarbon Rings

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] In this module, students will explore cyclic hydrocarbons, and explain how ring strain contributes to the shape of cyclic hydrocarbons. They will also name and write...
Unit Plan
University of Calgary

Univeristy of Calgary: Cycloalkanes

For Students 9th - 10th
A brief description of cycloalkanes. Properties, chemical make-up, and structure provided. Brief introduction to nomenclature of cycloalkanes and generic formula. Interactive piece requires x-pdb plug-in.
Lesson Plan
Chem Tutor

Chem Tutor: Chemistry: Compounds

For Students 9th - 10th
This lesson focuses on chemical compounds including Ionic and Covalent Bonds, Valences, Lewis Structures, Binary Covalent Compounds, Radicals or Polyatomic Ions, and much more. It also includes a compound worksheet in which the learners...
Handout
BiologyWise

Biology Wise: What Are Nitrogen Fixing Bacteria

For Students 9th - 10th
Describes symbiotic relationship between leguminous plants and nitrogen-fixing bacteria. Explains the mechanism the bacteria use to fix nitrogen, the chemical formula involved, and different types of nitrogen-fixing bacteria.
Handout
Chem Tutor

Chem Tutor: Basic Stiochiometry

For Students 9th - 10th
Detailed discussion of stoichiometry, mols, and percents. Includes examples showing dimensional analysis (factor-lable method) and a link to the mole road map (a diagram which leads one through the stoichiometric problem-solving process).
Handout
Towson University

Towson University: Drawing Lewis Structures

For Students 9th - 10th
Brief rules for writing Lewis structures for simple compounds. Some examples are included.
Unit Plan
Chem Tutor

Chem Tutor: Chemistry: Lewis Structures of the Elements

For Students 9th - 10th
This colorful page goes over the proper techniques for writing Lewis structures for elements. This is a great place to begin learning how to write Lewis structures. When you are ready for a more advanced lesson, follow the link to learn...

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