- published: 23 Feb 2012
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In the physical sciences, a phase is a region of space (a thermodynamic system), throughout which all physical properties of a material are essentially uniform. Examples of physical properties include density, index of refraction, magnetization and chemical composition. A simple description is that a phase is a region of material that is chemically uniform, physically distinct, and (often) mechanically separable. In a system consisting of ice and water in a glass jar, the ice cubes are one phase, the water is a second phase, and the humid air over the water is a third phase. The glass of the jar is another separate phase. (See state of matter#Glass)
The term phase is sometimes used as a synonym for state of matter, but there can be several immiscible phases of the same state of matter. Also, the term phase is sometimes used to refer to a set of equilibrium states demarcated in terms of state variables such as pressure and temperature by a phase boundary on a phase diagram. Because phase boundaries relate to changes in the organization of matter, such as a change from liquid to solid or a more subtle change from one crystal structure to another, this latter usage is similar to the use of "phase" as a synonym for state of matter. However, the state of matter and phase diagram usages are not commensurate with the formal definition given above and the intended meaning must be determined in part from the context in which the term is used.
Phase or phases may refer to:
Visit http://www.makemegenius.com for free educational videos for kids. Changes in Phases of matter -Full lesson for kids. We need to keep in mind that matter is everything around us. Like explained in states of matter video,matter is anything made of atoms and molecules and matter is anything that has mass and takes up space. If you don't understand mass, think it as the amount of stuff in an object. Objects keep changing due to heat and pressure e.g.water can move in different phases like it changes to ice on freezing & ice can change back to water through heating due to evaporation.Similarly condensation,melting are also different phases of matter.
After much ado, I have completed this film. It started out as a PowerPoint, then converted to a video.
Get to know plasma, the most common, but probably least understood, phase of matter in the universe! Hosted by: Michael Aranda ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources: http://www.universetoday.com/84361/plasma/ http://www.scientificamerican.com/article/quotwhat-causes-the-stran/ http://www.plasmacoalition.org/pl...
Everyone is familiar with liquid water, ice and water vapour, but what are the differences between these three states of matter? Solids, liquids and vapours of the same substance differ in the motion of the molecules and the distance between them. Animations courtesy of VisChem (Trade Mark), Copyright 1995, Roy Tasker. Thanks for all your help!
Understanding and interpreting phase diagrams Watch the next lesson: https://www.khanacademy.org/science/chemistry/states-of-matter-and-intermolecular-forces/introduction-to-intermolecular-forces/v/van-der-waals-forces?utm_source=YT&utm;_medium=Desc&utm;_campaign=chemistry Missed the previous lesson? https://www.khanacademy.org/science/chemistry/states-of-matter-and-intermolecular-forces/states-of-matter/v/vapor-pressure?utm_source=YT&utm;_medium=Desc&utm;_campaign=chemistry Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year high school or college course, and a good understanding of algebra is helpful. About Khan Academy: Khan Academy offer...
Did you know that water is the only thing on earth that naturally occurs as a solid, liquid and gas? This 5 minute video gives an entertaining and visual explanation of the three main states of matter and describes how water constantly moves through these states in the natural water cycle.
3 phases of matter and how to read a phase change diagram :)
Check us out at http://physics.tutorvista.com/thermodynamics/phase-change.html Phase Change The term 'change of phase' means the same thing as the term 'change of state'. There are four states, or phases, of matter. They are: •Solid •Liquid •Gas •Plasma We will not be discussing the plasma state here. When a substance changes from one state, or phase, of matter to another we say that it has undergone a change of state, or we say that it has undergone a change of phase. These changes of phase always occur with a change of heat. Heat, which is energy, either comes into the material during a change of phase or heat comes out of the material during this change. However, although the heat content of the material changes, the temperature does not. We will list five changes of phase. T...
Learn about the phases of matter, kinetic theory and temperature in this video.
This video describes states of matter and phase changes. ***Learning Targets covered in this video*** List the five states of matter. Explain the difference between a solid, a liquid, and a gas in terms of: arrangement of particles, movement of particles, shape, and volume Define the terms "endothermic" and "exothermic" in relation to a phase change. List and describe the six types of phase changes. Explain what happens to the temperature of a substance during a phase change. Define heat of fusion. Compare and contrast the melting point and freezing point of a substance. Identify the temperatures at which water boils and freezes. State the kinetic theory of matter.
The six phase changes and what causes them to happen
Line yourself up with the 2nd and 3rd stars on the bottom, and stay in the same vertical column, and it makes it really easy to get full damage hits on him. The exact positioning is pretty lenient. If he moves to the left side, you can line yourself up in a similar way, with the left half of kirby over the last health tick. I don't think he moves over to the left often if at all if you kill him as quickly as possible though.
Can't figure out what the green compound is, so i will contact bigger chemistry youtubers and see if they know. Apparently it reacts with paper and possibly other organics to liberate gas? My guess is the gas is either Oxygen or Hydrogen and the green is dissolved chlorophyll.
School on Current Frontiers in Condensed Matter Research URL: http://www.icts.res.in/program/cficmr16 DATES: Monday 20 Jun, 2016 - Wednesday 29 Jun, 2016 VENUE : Ramanujan Lecture Hall, ICTS Bangalore DESCRIPTION: Understanding strongly interacting quantum many body systems is one of the major frontiers in present day physics. Condensed matter physics provides a wide panoply of systems where strong interaction between constituent particles play a dominant role; some examples of such systems are high temperature superconductors, spin-liquids, fractional quantum Hall systems, and ultracold atoms in the strong-coupling regime. Recent additions to this list include topological insulators/superconductors, transition metal oxides and their heterostructures. These materials have the added fe...
A look at the states of matter (gas, liquid, and solid) and the transitions it undergoes including phase diagrams. Sorry about the hum - I forgot to unplug my laptop. If I get a chance I will redo this soon.
Learn the basic concepts for Phase Change in Pure Substances. For more, visit www.mindvis.in or call 09779434433.
Speaker : Subir Sachdev (Harvard University) Date and Time : 06 Dec 2010, 04:00 PM Venue : Faculty Hall, IISc, Bangalore Quantum mechanics was developed in the early twentieth century to describe the motion of a single electron in a hydrogen atom. Later, Einstein and others pointed out that the quantum theory of a pair of electrons had non-intuitive features which they found unpalatable: two well-separatedelectrons can have their quantum states "entangled", indicating that they talk to each other quantum mechanically, even though they are far apart. Today, quantum entanglement is not viewed as a subtle microscopic effect of interest only to a few physicists, but as a crucial ingredient necessary for a complete understanding of the many phases of matter. A crystal can have roughly trillion...
This second lecture is actually the first that covers new material for second semester. First, we take a look at phases of matter, and the differences between each phase by looking at distinguishing properties (Density, Shape, Compressibility, Intermolecular Force strength). Solids and Liquids have intermolecular forces that hold the particles close together. We discuss temperature in terms of molecular motion, and describe phase changes (melting/boiling) as occuring because the molecules are literally shaking too much and result in the interactions being broken. We also discuss pressure effects on phase boiling a little bit. We discuss the direct relationship between intermolecular interactions and melting and boiling points. Then we get into the 3 main types of intermolecular inter...
Prof. Ömer Dağ Department of Chemistry, Bilkent University "The Fourth Phase of Matter: Liquid Crystals" Wednesday, 2 May 2012 Prof. Ömer Dağ Kimya Bölümü, Bilkent Üniversitesi. "Maddenin Dördüncü Hali: Likit Kristaller" 2 Mayıs 2012, Çarşamba
PROGRAM: THE 8TH ASIAN WINTER SCHOOL ON STRINGS, PARTICLES AND COSMOLOGY DATES: Thursday 09 Jan, 2014 - Saturday 18 Jan, 2014 VENUE: Blue Lily Hotel, Puri PROGRAM LINK: http://www.icts.res.in/program/asian8 The 8th Asian Winter School on Strings, Particles and Cosmology is part of a series that is being organized annually in turn by Korea, Japan, China and India. The school will be held in Puri, India, as a program of the International Center For Theoretical Sciences, TIFR. The school is intended to be an advanced one. While String Theory is the primary focus, it also aims to provide a broader perspective emphasising that String theory is a useful framework for the basic questions of Particle physics and Cosmology and for the study of strongly coupled systems. The school is intended to ...
PROGRAM: THE 8TH ASIAN WINTER SCHOOL ON STRINGS, PARTICLES AND COSMOLOGY DATES: Thursday 09 Jan, 2014 - Saturday 18 Jan, 2014 VENUE: Blue Lily Hotel, Puri PROGRAM LINK: http://www.icts.res.in/program/asian8 The 8th Asian Winter School on Strings, Particles and Cosmology is part of a series that is being organized annually in turn by Korea, Japan, China and India. The school will be held in Puri, India, as a program of the International Center For Theoretical Sciences, TIFR. The school is intended to be an advanced one. While String Theory is the primary focus, it also aims to provide a broader perspective emphasising that String theory is a useful framework for the basic questions of Particle physics and Cosmology and for the study of strongly coupled systems. The school is intended to ...
Phase Diagrams are graphical representations of the phases that a substance takes under different temperature/pressure conditions. In this lecture we first reiterate our basic understanding of the 3 phases of matter (solid, liquid, gas), as well as the 6 possible phase transitions that can occur (melting, freezing, vaporization, condensation, sublimation, deposition). We then describe what a phase diagram of a general substance tells us (regions represent phases and lines represent phase transitions), and we also indicate the normal melting and boiling points, as well as the triple point and critical point. We then compare the phase diagrams of water and carbon dioxide. Introduction is filmed on location at the entrance to Laniakea overlooking Kailua Bay in Kailua, HI. General Chemist...
https://pitp2015.ias.edu/
Dispersion - Phase Velocity - Group Velocity This lecture is part of 8.03 Physics III: Vibrations and Waves, as taught in Fall 2004 by Dr. Walter Lewin at MIT. This video was formerly hosted on the YouTube channel MIT OpenCourseWare. This version was downloaded from the Internet Archive, at https://archive.org/details/MIT8.03F04/. Attribution: MIT OpenCourseWare License: Creative Commons BY-NC-SA 3.0 US To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/us/. More information at http://ocw.mit.edu/terms/. This YouTube channel is independently operated. It is not affiliated with MIT, MIT OpenCourseWare, the Internet Archive, or Dr. Lewin, nor do they endorse any content on this channel.
This is a video of part of a lecture course in thermal and statistical physics I taught at the Catholic University of Korea in 2013. This lecture includes: - the three phases of matter (0:01) - definition of latent heat (6:25) - phase transition terminology (12:48) - a typical phase diagram (15:55) - triple point and critical point (19:00) - supercritical fluids (23:32) - supercritical carbon dioxide video (25:56)