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Mike Blaber (Florida State University) 11.1: A Molecular Comparison of Gases, Liquids, and Solids is shared under a license and was authored, remixed, and/or curated by LibreTexts. The state of a substance depends on the balance between the kinetic energy of the individual particles (molecules or atoms) and the intermolecular forces.
Apr 29, 2024 · In a liquid, the molecules move freely, but stay close together. In a gas, they move around wildly and have a great deal of space between them. In the water cycle, evaporation occurs when sunlight warms the surface of the water. The heat from the sun makes the water molecules move faster and faster, until they move so fast they escape as a gas.
Sep 7, 2023 · From the Kinetic Molecular Theory of Gases and our studies of Grahm's Law of Effusion we know that the kinetic energy is proportional to the absolute temperature, and as we raise the temperature we raise the kinetic energy, 1/2mv 2 (where m=mass and v=velocity), and thus a light molecule would move faster than a heavy one. Of course for a gas ...
- Laminar and Turbulent Flow
- Boundary Layer
- Drag
When you empty water from a plastic bottle, you've probably noticed you can do it in two very differentways. If you tip the bottle at a shallow angle, the water comesout very smoothly; air moves past it, in the opposite direction,filling the bottle with "emptiness." If you tip the bottle more,or hold it vertically, the water comes out noisily, in j...
The speed at which a fluid flows past an object varies according to how far from the object you are. Ifyou're sitting in a parked car and a gale-force wind is howling pastyou at 200km/h (125mph), you might think the difference in speed between theair and the car is 200km/h—and it is! But there's not a sudden,drastic discontinuity between the statio...
Photo: The faster you go, the harder you have to work against the air. Air resistance doesn't really matter when you walk, because you're not traveling fast enough. But if you cycle, you need to think about aerodynamics much more and adopt a streamlined posture that disturbs the airflow as little as possible. Like this rider, you might want to get ...
Oct 19, 2023 · Vocabulary. Evaporation happens when a liquid substance becomes a gas. When water is heated, it e vaporates. The molecules move and vibrate so quickly that they escape into the atmosphere as molecules of water vapor. E vaporation is a very important part of the water cycle. Heat from the sun, or solar energy, powers the e vaporation process.
Jan 21, 2021 · Convection is motion in a gas or liquid that is caused by temperature differences. This motion transfers heat throughout the gas and liquid. The molecules in liquids and gases are farther apart and have more room to move around than in solids. Because of this, heated liquid or gas molecules can physically move.
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May 19, 2017 · Hope this helps :) Solids - vibrational (and rotational); moving very slowly. Liquids - vibrational, rotational, and translational; moving quickly. Gases - vibrational, rotational, and translational; moving very quickly. Particles are always moving. No matter what. There is a certain point where they move so slowly it is considered minuscule ...
