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.
Florida State University
Florida State University: Intermolecular Forces: Changes of State
Discusses the changes of state that can occur for the three different types of matter (solids, liquids, and gases) and different types of heat energy that have been defined by scientists.
Wikimedia
Wikipedia: Melting Point
Wikipedia offers a brief description of the term, "Melting point," including hyperlinked terms.
Other
Science Alive: Melting Point Simulation
Percy Julian and Josef Pikl used the fact that melting point-the temperature at which a substance changes from a solid to a liquid-is a characteristic property of a substance to prove that the British chemist Robert Robinson could not...
American Chemical Society
Middle School Chemistry: Changing State Freezing
Discover how freezing works, when the change of state moves from liquid to solid.
American Chemical Society
Middle School Chemistry: Moving Molecules in a Solid
Explore the movement of the molecules in a solid.
Other
Kinetic Molecular Theory [Pdf]
This PDF is fill in the blank notes, activities and graphic organizers on kinetic molecular theory.
NC State University
The Science House: Chromatography of Foods [Pdf]
Students will practice the technique of chromatography by separating a mixture of FD&C dyes. Questions related to the experiment along with the answers are available for use by the teacher.
Purdue University
Purdue Univ: Gases, Liquids, and Solids
This site has a brief description of the differences in particles in a gas, liquid, and solid. Animated microscopic pictures demonstrate the molecular movement in each state. Information is then summarized in an easy-to-read chart.
Upper Canada District School Board
Tom Stretton's Advanced Placement Chemistry: Liquids and Solids
Take on this self-guided advanced level e-text, and learn about the chemical and physical structure of liquids and solids.
Curated OER
Unesco: Spain: Rock Art of the Mediterranean Basin on the Iberian Peninsula
The late prehistoric rock-art sites of the Mediterranean seaboard of the Iberian peninsula form an exceptionally large group. Here the way of life during a critical phase of human development is vividly and graphically depicted in...