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Middle School Chemistry: The Water Molecule and Dissolving
published by the American Chemical Society
written by Patti Galvan and Jim Kessler
This set of multimedia lessons, developed by the American Chemical Society, examines the process of dissolving materials in water. Videos, interactive simulations, hands-on labs, and demonstrations are all integrated into a 9-part unit of instruction that includes assessments and background information. Students will explore why water dissolves salt and sugar, conduct solubility tests, investigate how temperature affects dissolving, and more.  

Editor's Note: The authors designed this curriculum to help students understand basic chemistry within a framework of molecular interactions. The molecular models and related animations provide a foundation for understanding states of matter, atomic models and bonding, charge interactions, and chemical change.

Please note that this resource requires Flash.
https://www.acs.org/middleschoolchemistry/lessonplans/chapter5.htm...
Subjects Levels Resource Types
Fluid Mechanics
- Statics of Fluids
- Surface Tension
General Physics
- Properties of Matter
Modern Physics
- Atomic Physics
= Atomic Models
Other Sciences
- Chemistry
Thermo & Stat Mech
- Phase Transitions
- Middle School
- Informal Education
- Instructional Material
= Curriculum
= Demonstration
= Instructor Guide/Manual
= Interactive Simulation
= Lesson/Lesson Plan
= Model
= Problem/Problem Set
= Unit of Instruction
- Audio/Visual
= Movie/Animation
Intended Users Formats Ratings
- Educators
- Learners
- Administrators
- text/html
- application/flash
- application/pdf
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Access Rights:
Free access
Restriction:
© 2009 American Chemical Society
Keywords:
chemistry animations, chemistry collection, chemistry videos, dissolving, heat and temperature, ionic compounds, molecular structure, physical change, solubility, solutions, state change simulation, suspensions
Record Cloner:
Metadata instance created June 27, 2011 by Caroline Hall
Record Updated:
February 24, 2025 by Lyle Barbato
Last Update
when Cataloged:
May 17, 2010
Other Collections:

AAAS Benchmark Alignments (2008 Version)

4. The Physical Setting

4D. The Structure of Matter
  • 6-8: 4D/M3ab. Atoms and molecules are perpetually in motion. Increased temperature means greater average energy of motion, so most substances expand when heated.
  • 6-8: 4D/M3cd. In solids, the atoms or molecules are closely locked in position and can only vibrate. In liquids, they have higher energy, are more loosely connected, and can slide past one another; some molecules may get enough energy to escape into a gas. In gases, the atoms or molecules have still more energy and are free of one another except during occasional collisions.
  • 6-8: 4D/M8. Most substances can exist as a solid, liquid, or gas depending on temperature.
  • 6-8: 4D/M10. A substance has characteristic properties such as density, a boiling point, and solubility, all of which are independent of the amount of the substance and can be used to identify it.
4E. Energy Transformations
  • 6-8: 4E/M4. Energy appears in different forms and can be transformed within a system. Motion energy is associated with the speed of an object. Thermal energy is associated with the temperature of an object. Gravitational energy is associated with the height of an object above a reference point. Elastic energy is associated with the stretching or compressing of an elastic object. Chemical energy is associated with the composition of a substance. Electrical energy is associated with an electric current in a circuit. Light energy is associated with the frequency of electromagnetic waves.

11. Common Themes

11A. Systems
  • 6-8: 11A/M1. A system can include processes as well as things.
11B. Models
  • 6-8: 11B/M1. Models are often used to think about processes that happen too slowly, too quickly, or on too small a scale to observe directly. They are also used for processes that are too vast, too complex, or too dangerous to study.
  • 6-8: 11B/M4. Simulations are often useful in modeling events and processes.
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Record Link
AIP Format
P. Galvan and J. Kessler, (American Chemical Society, Washington DC, 2009), WWW Document, (https://www.acs.org/middleschoolchemistry/lessonplans/chapter5.html).
AJP/PRST-PER
P. Galvan and J. Kessler, Middle School Chemistry: The Water Molecule and Dissolving (American Chemical Society, Washington DC, 2009), <https://www.acs.org/middleschoolchemistry/lessonplans/chapter5.html>.
APA Format
Galvan, P., & Kessler, J. (2010, May 17). Middle School Chemistry: The Water Molecule and Dissolving. Retrieved May 1, 2025, from American Chemical Society: https://www.acs.org/middleschoolchemistry/lessonplans/chapter5.html
Chicago Format
Galvan, Patti, and Jim Kessler. Middle School Chemistry: The Water Molecule and Dissolving. Washington DC: American Chemical Society, May 17, 2010. https://www.acs.org/middleschoolchemistry/lessonplans/chapter5.html (accessed 1 May 2025).
MLA Format
Galvan, Patti, and Jim Kessler. Middle School Chemistry: The Water Molecule and Dissolving. Washington DC: American Chemical Society, 2009. 17 May 2010. 1 May 2025 <https://www.acs.org/middleschoolchemistry/lessonplans/chapter5.html>.
BibTeX Export Format
@misc{ Author = "Patti Galvan and Jim Kessler", Title = {Middle School Chemistry: The Water Molecule and Dissolving}, Publisher = {American Chemical Society}, Volume = {2025}, Number = {1 May 2025}, Month = {May 17, 2010}, Year = {2009} }
Refer Export Format

%A Patti Galvan %A Jim Kessler %T Middle School Chemistry: The Water Molecule and Dissolving %D May 17, 2010 %I American Chemical Society %C Washington DC %U https://www.acs.org/middleschoolchemistry/lessonplans/chapter5.html %O text/html

EndNote Export Format

%0 Electronic Source %A Galvan, Patti %A Kessler, Jim %D May 17, 2010 %T Middle School Chemistry: The Water Molecule and Dissolving %I American Chemical Society %V 2025 %N 1 May 2025 %8 May 17, 2010 %9 text/html %U https://www.acs.org/middleschoolchemistry/lessonplans/chapter5.html


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