Please answer quickly !! : What is matter ?
919735
In physics, matter is commonly defined as the substance of which physical objects are composed, not counting the contribution of various energy or force-fields, which are not usually considered to be matter per se (though they may contribute to the mass of objects). Matter constitutes much of the observable universe, although again, light is not ordinarily considered matter. Unfortunately, for scientific purposes, "matter" is somewhat loosely defined.\n\nSee http://en.wikipedia.org/wiki/Matter for more information on matter.\n\nGood Luck!!!
76751
If we define the matter as any thing has mass then photons is matter.\nThis is although the rest mass of the photon is zero but it has a mass while running at speed of light
140934
Energy = mass times the speed of light squared\n\nIt conveys that a very small amount of matter actually represents/can be turned into a very large amount of energy, as in nuclear power, or a nuclear explosion.
1034996
Matter can exist in several different phases, according to particle density and energy density or alternatively pressure and temperature. These phases include gases, plasmas, liquids, fluids, superfluids, solids, and Bose-Einstein condensates.
68885
I think that simple answer is, no one knows. We have theories, but we really do not know. \n\nFor example, maybe the antimatter particles decay much faster (see reference). Maybe the universe is only locally mainly matter, and there are other patches of the universe that are locally mainly antimatter (see reference). \n\nWhat science is, is a series of problems and questions that scientists attempt to answer. You have asked one of those questions that is so far, in the unresolved category.
285523
My definition of matter is "condensed energy"
769964
The definations wanted by you are given below-\n\nIn physics, matter is commonly defined as the substance of which physical objects are composed, not counting the contribution of various energy or force-fields, which are not usually considered to be matter per se (though they may contribute to the mass of objects). Matter constitutes much of the observable universe, although again, light is not ordinarily considered matter. Unfortunately, for scientific purposes, "matter" is somewhat loosely defined.\n\nMass is a property of a physical object that quantifies the amount of matter and energy it is equivalent to. Mass is a central concept of classical mechanics and related subjects, and there are several forms of mass within the framework of relativistic kinematics (see mass in special relativity and mass in General Relativity). In the theory of relativity, the quantity invariant mass, which in concept is close to the classical idea of mass, does not vary between single observers in different reference frames.\n\nAn elementary particle is a particle with no measurable internal structure, that is, it is not a composite of other particles. They are the fundamental objects of quantum field theory. Elementary particles can be classified according to their spin, with fermions having half-integer spin and bosons integer spin.\n\nSpace has been an interest for philosophers and scientists for much of human history. The term is used somewhat differently in different fields of study, hence it is difficult to provide an uncontroversial and clear definition outside of specific defined contexts. Disagreement also exists on whether space itself can be measured or is part of the measuring system. (See Space in philosophy.) Many fields use an operational definition in which the units of measurement are defined, but not space itself.\n\nIn chemistry and physics, an atom (Greek  átomos meaning "indivisible") is the smallest particle of a chemical element that retains its chemical properties. \n\nA chemical element, often called simply an element, is a substance that cannot be decomposed or transformed into other chemical substances by ordinary chemical processes. All matter consists of these elements and as of 2006, 117 unique elements have been discovered or artificially created. The smallest particle of such an element is an atom, which consists of electrons centered about a nucleus of protons and neutrons.\n\nIn chemistry, a molecule is an aggregate of two or more atoms in a definite arrangement held together by chemical bonds. Chemical substances are not infinitely divisible into smaller fractions of the same substance: a molecule is generally considered the smallest particle of a pure substance that still retains its composition and chemical properties. Certain pure substances (e.g., metals, molten salts, crystals, etc.) are best understood as being composed of networks or aggregates of atoms or ions instead of molecular units.\n\nIn particle physics, antimatter extends the concept of the antiparticle to matter, wherein if a particle and its antiparticle come into contact with each other, the two annihilate —that is, they may both be converted into other particles with equal energy in accordance with Einstein's equation E = mc2. This gives rise to high-energy photons (gamma rays) or other particle–antiparticle pairs-.
961039
i always thought ti was a tiny piece of matter or maybe part of an atom ?
37036
Well I used to think about that a lot. Well, let me be honest here, before you go through my whole mumblings; I'm tying to prove that after reaching a point in a string of reasoning, we as being human beings cannot continue...\n\nOK, let's see. \nLet's start with a definition of matter and time. I'll assume that we agree that you and me and everything that exists around us, our universe, or the whole world is made of matter. (I define matter as something which is comprised by atoms). Matter is subject to change, and in fact transformation is a property of matter. Now what’s the definition of change? The word “change” itself implies the existence of “time”. When we say that X (X being anything material, a table or a human) has changed from A to B, we imply that there was a time point T0 in which X was in state A, and another time point T1 in which X has changed into state B. So as we can see, MATTER and TIME are much interleaved abstracts. \n\nWhat about SPACE?  Space is where matter can exist. How about ENERGY? Energy is the ability to change the state of matters. What about us humans? We live in this world, we are made of matter and exist in space and all the rules of energy apply to us. We are part of this world anyway!\n\nConclusion 1: MATTER, TIME, SPACE and ENERGY are all interleaved concepts that apply, in fact govern our world. \n\nNow another branch of reasoning: It is obvious to a logical mind that every thing which exists should have a cause, a creator. There cannot exist something material that had no creator. So if you start from anything material, let’s say your computer, and go back in the chain of creators. You can go back to through this chain, but you have to stop somewhere or else your reasoning will be caught in an infinite loop. There has to be a stop somewhere. Let’s call this entity as G.\nNow, this creator G cannot be made of matter, because everything which is made of matter should have a creator. So, it’s logical that the first creator should NOT be made of matter. As such, none of the other terms of TIME, ENERGY and SPACE govern it or its actions. This creator G is what we call the God. \n\nConclusion 2: God is not bound by MATTER, TIME, SPACE and ENERGY. \n\nSo, now by using the first two conclusions, I can reason that your question is irrelevant in some way. MATTER, TIME, SPACE and ENERGY are all the foundations of our universe, and God created them. He is out of this bound. \n\nTo clear things up, let's think about the “big bang” theory. In a nutshell, it states that at first, TIME, ENERGY, MATTER and SPACE were unite, squashed together in a tiny tiny dot. Now they still don't know what was the condition of this pile of matter and energy and time at the very first moment of time (they believe it exploded in a BIG way), but scientists have good answers for what happened after about 1e-43 seconds (i.e. 0.0000.......001 seconds, the number of zeros being 42). From then, it's known. It’s also proven that the space HAS boundaries. See the reference to know more about it. \n\nBut what was there BEFORE the big bang?! We just know two things about it. First, as I reasoned above, God SHOULD have existed before, to create that small, condensed dot of TIME, ENERGY, MATTER and SPACE. Second, I (and for this matter nobody) cannot imagine what it was like before, because we are all part of this world, material. We cannot even imagine it; we are SO made of matter and time that we cannot think outside it. As an example, as I stated earlier, it is proven that the universe (hence the space) is bounded and it’s increasing for now, but a long time from now it will start decreasing. What IS outside the boundaries? Nothing! It even is not vacuum, there is nothing, not even time exist there!  (Another good answer is that we don't know, and we'll never know, because we can't reach there and see). It is obvious that comprehending the meaning of “nothing” i
58617
Matter is something which has weight and occupy space but energy is a medium which cause a matter to do work.
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Those are states of matter (but there's also plasma).  Light isn't matter, it's a wave, like sound.
241917
its simply matter that is composed of the antiparticles of those that consistitute normal matter....
1160697
Don't know who told you that "atoms only consist of energy", but in general, that's nonsense. Atoms consist of electrons and the nucleus (protons and neutrons, which again are made up from quarks), and these particles have a well defined rest mass. Einsteins theory of relativity is well proved and gives us the famous equation E=mc^2 for the energy equivalence of a rest mass, *which does not mean that energy and mass are the same*. It just means that you can transform energy and mass into each other and are equivalent in a certain (relativistic) way.\n\nSo if you want to make a fool out of yourself: Go ahead and try to disproof Einstein, like thousands of fools have tried before. If you're really interested in physics, go and get some good books about the basics, and you're welcome to come back with some more serious questions.
932600
http://en.wikipedia.org/wiki/States_of_matter
295138
Suprise answer and correct! PLASMA\nPlasma is also the most common form of matter in the universe!
967323
I have no physics degree but I think this might help you.  The answer will vary slightly depending on how contemporary the physics you use to answer it is but here is an inexact answer which should give you the general idea.\n\nSo the first thing you need to know is that all matter is not in existence already.  Matter is energy in a special form where it is sort of tied up in a wiggly knot.  You can see the relation between the two in einstein's\n\nm=E/c^2   (just an alternate form of E=mc^2)\n\nwhere\nm is mass(the property that quantifies matter)\nE is energy\nc is the speed of light\n\nSo from that there is an equivalence between matter and energy.  Matter can be created by knotting up energy, or destroyed by liberating the energy it was made with.\n\nSo, without going into really advanced physics, all mass is not conserved (meaning it can be created or destroyed) but energy IS conserved, there are all kinds of rules involved, but you can interchange the two of them.\n\nWhen you release energy as photons from matter you are converting some of that matter (tied up energy) into energy.  If you could weigh the matter that radiated the photons well enough you would be able to see that it weighs less!\n\nIn "pair production" a photon can create matter; an electron and positron.\n\nAnother example of energy being released from matter is nuclear fission.  Where the matter going in weighs more than the matter after the process.  The difference of mass is the energy freed from the uranium fuel.\n\nIt's like the photon is some of the stuff that the electron is made of... (this is a loose analogy) like some of the waggling rope that the electron knot was made of.  The electron knot can lose some excitement (energy) by shedding a section of the length of the rope(photon) which goes zipping away as pure electromagnetic energy.\n\nAll the abstractions like neutron, proton, electron, photon aren't really such absolute and fundamental things that are seperate and different from each other.  They are more like energy tied up in different ways.
1082883
Unless you are referring to matter, e.g, atoms, being converted into pure energy, the only way any form of matter can completely disappear is if it is what is known as a virtual particle produced from vacuum fluctuations in space, which immediately disappears without any affect on the surrounding matter or space