American Chemical Society
Middle School Chemistry: Energy Changes in Chemical Reactions
Students will conduct two chemical reactions: endothermic and exothermic. They will see an animation that shows that it takes energy to break bonds and that energy is released when new bonds are formed, and use that animation to explain...
American Chemical Society
American Chemical Society: Hompage
ChemCenter, available from the American Chemical Society, provides chemistry news, reference sources and other public services.
Concord Consortium
The Molecular Workbench Database: Chemical Reactions and Stoichiometry
This simulation helps students investigate the basics of chemical equations. Students will review stoichiometry and what effects their reaction rates.
Concord Consortium
The Molecular Workbench Database: Energy Conservation in Chemical Reactions
Follow the energy conversion from potential to kinetic in this interactive activity that explores total energy in chemical reactions.
Science Education Resource Center at Carleton College
Serc: Introducing Ionic Bonds: How Does the String Hold Together?
This inquiry activity introduces chemical and ionic bonds and allows students to investigate an unknown situation, make hypotheses, and share data.
American Chemical Society
Middle School Chemistry: Temperature and Rate of a Chemical Reaction
Watch molecules collide with enough energy that bonds break and form new bonds in a chemical reaction.
Concord Consortium
The Concord Consortium: Molecular Workbench: Seeing Chemical Equilibrium
Observe a visual representation of the equilibrium of products and reactants in chemical reactions. Record data while the reactions are taking place and print out a report afterwards.
CPALMS
Florida State University Cpalms: Florida Students: Physical and Chemical Changes
Explore the differences between chemical and physical changes, including some examples at the atomic level.
Other
Chemical Bonds: Writing Lewis Structures
This slide show explains the rules for writing Lewis structures and then demonstrates an example. It then provides a practice example for the student to try.
Nobel Media AB
The Nobel Prize: The Nobel Prize in Chemistry 1954
Read about Linus Carl Pauling (1901-1994), the recipient of two Nobel Prizes, and his research into the nature of the chemical bond which earned him recognition in the world of chemistry.
McMaster University
Mc Master University: Chemistry: Ionic Bonds
This site gives a brief description of bonding in ionic compounds.
Other
Chemical Bonds: Electronegativity
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.
Sophia Learning
Sophia: Hydrogen Bonding Identification: Lesson 1
This lesson will explain how to identify molecules that exhibit hydrogen bonding. It is 1 of 2 in the series titled "Hydrogen Bonding Identification."
Texas Education Agency
Texas Gateway: Ionic Bonds: Electron Dot Formulas
Given descriptions, diagrams, scenarios, or chemical symbols, students will model ionic bonds using electron dot formulas.
University of Arizona
University of Arizona: Chemistry Tutorial
The purpose of this tutorial is to introduce you to some of the chemical concepts which are necessary to understand biology. Concepts include the basics for understanding biology, chemical bonds and attractive forces, the chemistry of...
Sophia Learning
Sophia: Chemical Reactions: Lesson 4
This lesson will present a basic understanding of the periodic chart of elements and how to predict chemical reactions based on given information. It is 4 of 9 in the series titled "Chemical Reactions."
CK-12 Foundation
Ck 12: Physical Science: Conservation of Energy in Chemical Reactions
[Free Registration/Login may be required to access all resource tools.] Describes the law of conservation of energy and how energy is conserved in chemical reactions.
Chem4kids
Chem4 Kids: Atoms: Bonding
The website provides a basic explanation of why and how atoms bond together through a covalent bond. Examples with pictures given.
Chem Tutor
Chem Tutor: Binary Covalent Compounds
An explanation of bonding in binary covalent compounds. Rules for naming binary covalent compounds using common names and system names are also provided.
Concord Consortium
Concord Consortium: Energy of Bond Formation
Explore distance and energy of bond formation.
Utah Education Network
Uen: Grouping Bonds
Students will group a selection of electron dot structures and determine similarities and differences between covalent and ionic bonding.
Simon Fraser University
Chem1 Virtual Textbook: The Valence Bond Model
The General Chemistry Virtual Textbook, or Chem 1, is broken into several sections covering various aspects of topics related to chemistry. This section deals with hybrid orbitals and specifically the valence bond model.
McMaster University
Mc Master University: Molecular Structure
This PowerPoint presentation features 33 slides that explain chemical bonding and molecular shape.
Other
Chem Cases: Nutra Sweet: Physical and Chemical Properties
An in-depth look at the physical and chemical properties of aspartame, or NutraSweet.
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