Questions tagged [states-of-matter]

Physicists classify matter according to the state of matter, which are gas, liquid and solid. A material is either in one of these states depending on the temperature and/or pressure applied to it. One characterises the state of matter by the mechanical response of a material under pressure.

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Cubic nature of van der Waals' gas equation [duplicate]

$V_m^3-\dfrac{RT+bP}{P}V_m^2+\dfrac{a}{P}V_m-\dfrac{ab}{P}=0$ So, At $T<T_c$ the above equation has three real roots say $V_1,V_2,V_3$, my doubt is what does this mean physically because for some ...
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How does removing air from a vessel of water create bubbles?

I recently started reading Richard Feynmans 'six easy pieces'. I did physics and chemistry combined in secondary school but that was 3 years ago and thought it would be a nice introduction back into ...
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What state of matter is the entire known universe?

What state of matter is the entire known universe? I know it contains all forms, but as it expands into the infinite nothingness, what state of matter does it act as? I know little about physics, but ...
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Is there any relation between condensation and light?

Ok, I realise the question title is kind of stupid. But I don't really know how to summarize it in one line as it's quite a weird, specific situation. I have a lamp beside my bed on a shelf where I ...
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Interaction of EM radiation with atoms

I have a few questions on the different types of phenomena of light and matter interaction. I understand there are generally 5 types of ideas. Diffraction, reflection, absorption, emission and ...
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What happens to the composition of a mixed gas plasma when de-ionizes back into a gas

I've been thinking about this question for the past few days, but I'm not very well versed in plasma physics. I am an aerospace engineering student in my senior year of college. A little while ago, I ...
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Could charm, bottom, and even top matter form under the right circumstances?

Strange matter forms because turning some of the down quarks into strange quarks unlocks lower energy levels, and this can lower the system's overall energy at high densities. If the density was ...
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When will a physical system have infinite entropy? [duplicate]

What physical system will have infinite entropy? I myself can give an example of a system that has infinitely many elements, an infinite universe will have infinite entropy, or a system that can have ...
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Has any double slit experiment been performed near 0 kelvin?

That would provide us information on the effect of random atomic vibrations on the interference pattern, as well as on the states of matter. Did we perform such an experiment? If yes, did we observe ...
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Temp and state change of water in a perfect void

Let's say that I was able to instantaneously transport spherical volume of water into a perfect vacuum, with no external gravity present, and no light or heat sources present - a void Would the ...
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Is helium liquid at 0 K?

I just saw in the dynamic periodic table that He is liquid at $-273.15\ ^\circ \rm C$. Is that true? How is that even possible? Can someone explain?
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If singular Quarks cannot exist on their own, then how is Quark-Gluon Plasma possible?

To my understanding, QGP is a theoretical form of matter where quarks are freely floating around. I understand immense temperature and pressure is required to form this. Also to my knowledge, quarks ...
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If mass changes when we go in the speed of light . So it breaks law of matter which states that matter can't be created or destroy [closed]

When go at the speed of light the mass constantly started to change which is not possible if law of matter is correct
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Is a small fragment of a white dwarf stable? [duplicate]

Assuming it is somehow possible to get a small piece of a white dwarf (maybe a dice) and this piece escapes into free space. Would that piece of white dwarf matter keep its density/state, or would it ...
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States of Matter misnomer

Is the phrase "States of matter" a misnomer? A "state of matter" describes the configuration/structure of atoms and molecules in an object, correct? It would not make sense to ...
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Why do we say that at boiling point liquid and vapour exist in equilibrium?

I understand that at boiling point, vapour pressure becomes equal to the external pressure. But in my textbook it is written that at boiling point liquid and vapour exist in equilibrium. What does it ...
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Proof for the expression of Boyle's temperature

Boyle's temperature is the temperature in which a real gas behaves like an ideal gas under a certain range of pressure. In my book, it is given that Boyle's temperature ($T_{b}$): $T_{b}=\frac{a}{Rb}$ ...
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How can potential energy increase without kinetic energy during phase change?

From what I’ve come across the internet, the reason temperature remains constant during phase transitions is that the energy goes into increasing intermolecular potential energy instead of average ...
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Why, exactly, does temperature remain constant during a change in state of matter?

My counterargument: Intermolecular forces between molecules are either intact or broken. There is no in-between. Therefore, the change from intact to broken is instantaneous. Applied heat energy ...
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At what temperature are the most elements of the periodic table liquid? [closed]

For elements where 'liquid', is relatively easy to define, at which temperature are the most elements liquid, and which ones? Assume 1 atm
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Are Dark Matter and Antimatter "states" of matter? What broad category do these fall into?

This question is more to do with what matter is and what matter is not. We know that there is something called matter, which is basically everything we see around us. 17 fundamental particles make up ...
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Number and Types of States of Matter [closed]

I wanted to know if there were more than 5 states of matter (man-made or natural) and so I searched it up. Other than solid, liquid, gas, plasma, and Bose-Einstein state, these were varying results ...
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Melting point vs pressure

In my physics-class, I was told that, "The melting point of the same substance changes under different pressure. But it can change in two different manner" There are 2 different ways it can ...
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Does sugar have a quasi-liquid film on its surface at room temperature?

Background According to an article from Physics Today, ice is slippery because there is a “liquid or liquid-like layer” on its surface. There are 3 mechanisms that can cause this layer to exist, each ...
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Why doesn't the state of matter oscillates between solid , liquid and gaseous phase?

I was reading about the London dispersion forces and it is written that it arises due to an asymmetric distribution of charges in an atom at an instant which gives rise to a temporal dipole and this ...
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What form or state of matter is a black hole

Neutron stars form dense clusters of neutrons which I have heard being called an element 0 and theoretically could form strange matter and the like from what I have read. Given that a black hole is ...
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Why are there clear-cut states of matter instead of a gradual transition from gas to solid?

Why are there clear-cut states of matter instead of a gradual transition from gas to solid (let's set plasma aside for the purpose of this question)? If the main difference between them is the ...
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Velocity of Sound with an Increase in Pressure

Why does the velocity of sound not increase with an increase in pressure? Let me take an example. Suppose there exists a gas at some pressure. With an increase in pressure, it would turn into a liquid....
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21 votes
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If we repeatedly divide a solid in half, at what point does it stop being a solid? [closed]

Suppose I have some material in solid-state (say), I cut it into two parts. Take the first cut it into two parts, take the first cut it into two parts, and then repeat this again and again. There will ...
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"Solids have distinct boundaries" meaning

That may sound very silly questions but believe me I'm unable to understand that . I'm unable to visualise how solid can be said to have distinct boundaries . Please help me so I can make the picture ...
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Is there a state of matter with no definite volume but definite shape? [closed]

Essentially I am wondering since solids have definite shape and volume, liquids have definite volume, and gases have neither definite volume or shape if there was a state of matter that can change ...
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4 votes
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Continuous Transition From gas to liquid

Consider the following figure: Let us suppose we were at some point in gaseous phase. Can we go from gaseous to liquid phase by moving about critical point continuously? Why isn’t any critical point ...
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What is the most basic system that exhibits states of matter?

I'm trying to develop a more intuitive understanding of the states of matter..specifically the difference between solid and liquid. To this end, I'd like to consider the most basic system in which the ...
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Please correct my line of thoughts about this question on States of Matter because I seem to be missing out on something major

Ok So please forgive me for my weird doubts and obviously stupid doubt but we (a grade 10 student) study that solid, liquid, gas is sometimes defined according to the distance between the molecules ...
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Converting matter into plasma using Sunlight?

How much light is needed to convert elements from a lower-state-of-matter such as from a solid directly to plasma without a liquid state, if that is possible?. Which element would produce the most ...
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What do we know about the features of Dark Matter? [closed]

In 2020, how much information have we got about this matter? I'm just curious.
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Heat transport from electrons in Drude model

In Drude model we calculate the heat current supposing that electrons coming from low temperature side carry less energy than electron who have made their last collision on higher temperature side, i....
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61 votes
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If liquid and gas are both chaotic states of matter, what's the difference between them on the molecular level?

I'm a laywoman in physics and recently found myself pondering about the matter reflected in the title of this post. To make my question more precise from the mathematical standpoint, let's suppose ...
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Can a gas be compressed to a higher density than its liquid counterpart?

Given a volume of a gas (such as Hydrogen, or any other gas) At near 0 Kelvin in temperature, and near 0 barometric pressure (vacuum). Can the gas be mechanically compressed to such an extent, that ...
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New electronic state of matter

I just heard about a new state of matter, clustered electrons. I didn't know that electrons could do that. Can anyone describe the mechanism by which this is possible? https://phys.org/news/2020-02-...
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Salt water and ice, vs. plain water and ice

A famous puzzle is whether an ice cube melts to nothing more quickly in salt water or fresh water. The answer is fresh water, because the water melting off the ice cube sinks in the plain water and ...
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2 votes
2 answers
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What is the adiabatic index of stiff matter?

In relativity, "stiff matter" is described by the relation $p = \rho$, where $p$ is the fluid's pressure and $\rho$ is its total energy density. The sound velocity in stiff matter equals the velocity ...
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What is quark-gluon plasma?

My question is pretty simple: what is quark-gluon plasma? I searched it on Wikipedia and I didn’t understand a single word😅! of the article on the state of matter. In physics, a state of matter is ...
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Materials intermediate in density between osmium and neutronium [closed]

The densest elements on Earth are metals. Osmium is the most dense. The densest matter in the Universe is Neutronium which is not an element but degenerate matter. If we put Osmium and Neutronium on ...
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Ice lined refrigerator(ILR)

Disclaimer: An ILR has cabinet temperature of +2 to +8 °C and at the same time they do have lining of water containers(ice tubes), fitted all around the walls and held in place by a frame. When it is ...
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There are 3 things not made of matter [closed]

When I'm teaching middle school science and I'm teaching the concept of matter I usually tell them that everything is made of matter except for 3 things. Space-Time, Energy (light, heat, kinetic, ...
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Why is it possible to raise the temperature of water over the boiling point?

For example, if we take water at a constant pressure and increase the temperature fast enough over the boiling point, the water will not boil. Why does it happens?
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Can the sound change the state of the medium?

The waves perform compression and rarefraccion in the medium where they spread, right?   when the rarefraction happens we should feel the medium in a liquid or gaseous state since the molecules ...
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3 votes
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Can rocks be used to propel rockets? [closed]

Can rocks and soil, or simply any other common form of matter with a mass, be vaporized in a nuclear thermal rocket at high temperatures to provide thrust for the rocket? Wouldn't that be convenient ...
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1 vote
3 answers
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How is the answer valid for following question? [duplicate]

A closed flask contains water in all its three states solid, liquid and vapour at 0 degree Celsius. In this situation, the average kinetic energy of water molecules will be a) the greatest ...
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