Chiral Publishing
Chiral Publishing: An Introduction to Chemistry: Effect of Changing Volume on Equilibrium Systems
Learn how volume changes affect gas-phase reactions by altering their concentrations and reaction rates. View examples with solutions and a table of predicted equilibrium changes. Also find links to tutorials and animations of other...
American Chemical Society
Middle School Chemistry: Changing State Freezing
Discover how freezing works, when the change of state moves from liquid to solid.
University of Waterloo (Canada)
The University of Waterloo: The Heating Curve
The heat of vaporization along with several other thermal properties are explained. Sample problems are given. Illustrations.
Chem Tutor
Chem Tutor: States of Matter
A very descriptive site that allows students to understand the different states of matter at the atomic level. Also discusses the process of phase changes and displays phase change graphs. Thermochemistry is also touched upon for high...
Texas Instruments
Texas Instruments: Who Says a Watched Pot Never Boils?
In this activity, students' will investigate what causes phase changes in matter.They use a temperature sensor to measure the temperature of a substance and identify visual clues to the phase changes.
Museum of Science
The Atom's Family: Phases of Matter
Help the Phantom choose a material and observe the changes at different temperatures in the molecule chamber. What happens to the elements or molecules as the temperature changes?
Simon Fraser University
Chem1 Virtual Textbook: Absolute Entropies
With an overview of topics related to chemical equilibrium, this site provides a foundation to a study of thermodynamics and entropy. The subject, absolute entropies, is discussed in addition to the third law of thermodynamics, phase...
Cosmo Learning
Cosmo Learning: General Chemistry
A collection of video lectures from a general chemistry course taught at the University of California, Berkeley. The course teaches periodic table, chemical bonds, molecular shape, phase changes, chemical reactions, stoichiometry,...
Georgia State University
Georgia State University: Hyper Physics: Heat of Vaporization
A discussion of the vaporization process and the energy changes which accompany the process. Includes an informative graphic and a discussion of how to determine the heat of vaporization.
Purple Math
Purplemath: Graphing Trigonometric Functions
This resource explains how to relate constants in trigonometric function to amplitudes, vertical shifts, periods, and horizontal or phase shifts with the help of many solved examples for various trigonometric functions.
Science Education Resource Center at Carleton College
Serc: Exploring States of Matter Gases
In this series of chemistry labs, students learn about the three states of matter by observing how molecules contract or expand as they change state.
CPALMS
Florida State University Cpalms: Florida Students: Heat and States of Matter
Learn how states of matter can change as heat is added to a system.
Other
Birthday Moons: It's Just a Phase You're Going Through
Ever notice that the moon appears to change shape? Does this occur randomly or is there a pattern? Discover the answer by taking a virtual trip to the moon for your birthday.
Chem4kids
Chem4 Kids: Changing States of Matter
Find out how matter can change from one state to another.
Quia
Quia: Phases of Matter
Four activities for reviewing vocabulary and definitions related to changes in states of matter.
University of Maryland
U. Of Maryland: Change of State of Liquid Nitrogen
A page from the University of Maryland Physics Lecture Demonstration Facility. Provides directions for a teacher demonstration of the vaporization of liquid nitrogen. Shows apparatus and set-up; provides suggestions. Easily adaptable as...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: States of Matter
Watch different types of molecules form a solid, liquid, or gas. Add or remove heat and watch the phase change. Change the temperature or volume of a container and see a pressure-temperature diagram respond in real time. Relate the...
University of Sydney (Australia)
University of Sydney: Structure and Properties of Materials/thermal Physics
An exhaustive set of "lecture notes" on various topics in thermal physics (including thermal expansion). Explanations are well done and more interesting than most. Includes both a mathematical and conceptual treatment of topics. Humor,...
University Corporation for Atmospheric Research
Ucar: Just a Phase: Water as a Solid, Liquid, and Gas
This site helps students construct a model of the arrangement of water molecules when present as solid, liquid or gas. Includes background information, lesson plans, links to standards and assessment ideas.
CK-12 Foundation
Ck 12: Physics: Thermal Properties Study Guide
A study guide for concepts related to thermal energy.
Bill Nye
Bill Nye: Baseball Moon
Try this at-home science experiment to make your own Moon model and see how the Moon's phases change.
Sophia Learning
Sophia: Bill Nye: Baseball Moon
Bill Nye explains the phases of the moon with an experiment using a baseball, a lamp on a table, a dark room, and a stool or chair that swivels. As the person moves around, the changes in reflected light show the phases of the moon. The...
TeachEngineering
Teach Engineering: Lunar Learning
Why does the Moon not always look the same to us? Sometimes it is a big, bright, circle, but, other times, it is only a tiny sliver, if we can see it at all. The different shapes and sizes of the slivers of the Moon are referred to as...
Science Buddies
Science Buddies: What's the Point of Boiling?
You know that water can exist in three separate phases: solid (ice), liquid (water), and vapor (steam). To change from one phase to another, you simply add (or remove) heat. When water boils, what happens to molecules (for example sugar...
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