Other
Chemical Reax/exothermic Reactions
A wonderfully complete primer on exothermic reactions in the context of chemical spills. Covers Reactions with Air or Water, Combustible Organics, Polymerization Reax, Decomposition, Corrosion, and much much more.
Other
Reverse Osmosis and Osmotic Pressure What They Are
This site gives a good explanation of osmosis and reverse osmosis. Also includes a scientific diagram of the process.
TeachEngineering
Teach Engineering: Floaters and Sinkers
Through this curricular unit, students are introduced to the important concept of density. The focus is on the more easily understood densities of solids, but students may also explore the densities of liquids and gases. Students devise...
TeachEngineering
Teach Engineering: What Floats Your Boat?
Learners use modeling clay, a material that is denser than water and thus ordinarily sinks in water, to discover the principle of buoyancy. They begin by designing and building boats out of clay that will float in water, and then refine...
Frostburg State University
Frostburg State Chemistry Online: Pressure & Oxygen Solubility
The effect of changing pressure on the solubility of oxygen in water. Explains how temperature and pressure affect dissolved oxygen levels. Includes example formulas.
Science Bob Pflugfelder
Science Bob: Oobleck: The Cornstarch and Water Experiment
Try this fun and easy experiment to learn about "Non-Newtonian" liquids.
Other
Steve Spangler Science: Soda Bottle Prank
This resource demonstrates atmospheric pressure using a soda bottle and water.
TeachEngineering
Teach Engineering: How a Faucet Works
Students learn about the underlying engineering principals in the inner workings of a simple household object - the faucet. Students use the basic concepts of simple machines, force and fluid flow to describe the path of water through a...
PBS
Pbs Teachers: Potential Energy: How Does It Work?
Describe the difference between energy in motion and at rest, and demonstrate energy's capacity for doing work. Draw a picture of water moving a turbine, and discuss other ways that a turbine might be made to move.
Other
Digital Library for Earth System Education: Teaching Box: Essentials of Weather
A suite of lessons focusing on the basic elements of climate and weather. Inquiry-based exploration of extreme weather events and the factors of weather including clouds, wind, air pressure, temperature, and the water cycle.
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Salts and Solubility
Add different salts to water, then watch them dissolve and achieve a dynamic equilibrium with solid precipitate. Compare the number of ions in solution for highly soluble NaCl to other slightly soluble salts. Relate the charges on ions...
BioEd Online
Bio Ed Online: Microgravity
In this lesson students will use water balloons to simulate the effects of gravity and microgravity on fluid distribution in the body.
BBC
Bbc: Earth: Tardigrades Return From the Dead
Tardigrades are ancient, fascinating creatures that can survive conditions that would kill most life forms, including extreme heat and absolute zero, extreme pressure and a vacuum, and deadly radiation. They can even survive being...
Khan Academy
Khan Academy: Osmosis and Tonicity
Provides an overview of osmosis and tonicity and looks at how osmosis works, as well as the role it plays in the water balance of cells. Describes hypertonic, isotonic, and hypotonic solutions and their effect on cells.
Texas Education Agency
Texas Gateway: Cell Homeostasis: Osmosis
Learn how water flows in and out of solutions in this interactive tutorial.
Texas Education Agency
Texas Gateway: Humidity, Evaporation, and Boiling
By the end of this section, you will be able to explain the relationship between vapor pressure of water and the capacity of air to hold water vapor, explain the relationship between relative humidity and partial pressure of water vapor...
CK-12 Foundation
Ck 12: Gas Mixtures and Molecular Speeds
[Free Registration/Login may be required to access all resource tools.] The following online tutorial helps students use Dalton's Law and mole fraction to calculate the partial pressure of a gas in a mixture. They will learn to calculate...
Vision Learning
Visionlearning: Atmosphere and Oceans: Composition of Earth's Atmosphere
An explanation of the different parts of the atmosphere and how pressure and temperature changes at different altitudes.
OpenStax
Open Stax: Requirements for Human Life
Earth and its atmosphere have provided us with air to breathe, water to drink, and food to eat, but these are not the only requirements for survival. Although you may rarely think about it, you also cannot live outside of a certain range...
TeachEngineering
Teach Engineering: Rock and Boat
Students observe Archimedes' principle in action in this challenge where a toy boat is placed in a container of water and a rock is placed on the floating boat. Students must explain why the water level rises/falls/stays the same based...
Science Buddies
Science Buddies: Do Hurricanes Cool the Ocean?
If you've ever so much as watched a news clip about a hurricane, you probably know that hurricanes draw their power from warm ocean waters. If that is true, does it mean that hurricanes actually cool the ocean down when they pass...
Other
Fundamentals of Reverse Osmosis
This site provides a basic definition of reverse osmosis, with a bit of a slant on why water pretreatment is important.
Sophia Learning
Sophia: Osmosis: Lesson 2
This lesson explains the process of osmosis. It explains how osmosis is a passive form of transport, used to move water molecules across a semi-permeable membrane, down their concentration gradient. It is 2 of 8 in the series titled...
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