Is there anything beyond proton and neutron in an atom?
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Yes.\nStuff that make up the protons and neutrons.\nAnd stuff that make up the stuff that make up the protons and neutrons.\nAnd ..................it goes on and on, but we humans do not know where it ends, or even if it does end, there are only theories about it.
170267
An atom is the smallest unit of any observable thing you can have. Atoms make up almost everything we can see.\n\nIt's name is Greek for 'Indivisable' but we have since found that atoms are made of protons, neutrons and electrons (and the first two are made of even smaller particles).\n\nAn element is a substance that is entirely comprised by only one type of atom. Gold, Tin and Oxygen are elements because they are made entirely of Gold, Tin and Oxygen atoms.\n\nMolecules and Compounds are similar in that they are made up of two or more atoms of different elements in a precise and defined ratio. Atoms in compounds can be ionically bonded. Molecules are, generally, covalently bonded.
73226
Protons is the atom's atomic number.  It gives the atom its certain "chemical properties".  The proton has a weight of 1.  The neutron is a combination of a proton and electron roughly as evidenced by storing a neutron for more then 15 min and it will turn into a hydrogen atom.  For all intensive purposes the electron has no weight.  The neutron weighs 1 as well. When you combine the numbers of protons and neutrons in an atom you get the weight.  The neutrons act as glue for the atom and help keep it together.  Thus Uranium 235 is more unstable then Uranium 238. (235 is what they use in reactors).  The electron is attracted to the proton. Electron(-) proton (+).  But as you get towards the left section of the table you have atoms that want to lose their electrons since the want full orbitals.  As you get toward the right side of the table you get atoms that want to gain electrons to fill their shells.  These atoms that have a positive charge are known as cations longer word = positive. Shorter word or Ion = negative.
891179
The greater the atomic number, the greater the number of protons in the nucleus, which USUALLY means a higher number of neutrons and electrons. The greater number of particles (protons, neutrons, and electrons) the greater the atomic radius. \n\nNote: There are different answers to this question depending upon what level of chemistry you are taking. But if you're taking a basic chemistry, it's the right answer.
436139
yes, Each proton and each neutron contains three quarks.There are several varieties of quarks. Protons and neutrons are composed of two types: up quarks and down quarks.\n\nEach up quark has a charge of +2/3.\nEach down quark has a charge of -1/3.\nThe sum of the charges of quarks that make up a nuclear particle determines its electrical charge. \n\nbut string theory proposes that it gets smaller than quarks a lot smaller. it is interesting and cool to look into.
1008396
positively charged protons (in the nucleus), neutrally charged neutrons (also in the nucleus) and negatively charged electrons (which circle around the nucleus) ....also they have "discovered" other matter in the atom called quarks and a couple other similarly named items....but it is generally accepted that protons, neutrons, and electrons make up an atom....
990811
Quantum mechanics is a fundamental physical theory which extends and corrects Newtonian mechanics, especially at the atomic and subatomic levels. It is the underlying framework of many fields of physics and chemistry, including condensed matter physics, quantum chemistry, and particle physics. The term quantum (Latin, "how much") refers to the discrete units that the theory assigns to certain physical quantities, such as the energy of an atom at rest.
515612
Atoms do not have a charge.\nIons have a charge (either plus or minus)
680011
no one really knows yet.\n\nalthough, at one point, people thought atoms were the smallest particles, now we know about protons, neutrons, and electrons (and now there's a theory that they're made out of something called quarks, but no one really knows what they are)... it's only a matter of time until we find out what they're all made of... and what those things are made of... and what those things are made of... and so on (I seriously doubt it ever ends... like the universe)
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http://en.wikipedia.org/wiki/Atom
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Atom  \n\nThe smallest unit matter can be divided into whilst still retaining its chemical identity. Atoms are not single particles but complex arrangements of three types of particles. The subatomic particles, protons, neutrons and electrons, combine to form atoms. The protons and neutrons provide the bulk of an atom's mass and are concentrated into a tiny central region known as the atomic nucleus. The nucleus is held together by the strong nuclear force which acts between the constituent particles (termed nucleons ). The protons are positively charged and so mutually repel each other, but it is not until there are many of them that they overcome the nuclear force. Thus there is only one stable element beyond lead (Z=82). Whilst the radius of an atom is in the region of 10-10 metres, the atomic nucleus is about ten thousand times smaller at 10-14 metres. The volume surrounding the nucleus is where the electrons exist. They are much lighter than the protons and neutrons and carry a negative electrical charge. Being opposite in charge to the nucleus, the electrons are held in orbits around it by the force of electromagnetism. The electrons exist in electron orbitals around the nucleus. These orbitals are grouped into shells. Within each shell are energy levels which allow the electrons to exist in unique quantum states, depending upon their angular momentum (hence energy), in accordance with Pauli's exclusion principle . In a neutral atom the number of electrons equals the number of protons. When ionisation occurs, one or more electrons are provided with enough energy to escape the atom altogether. What remains is known as an ion because it is now positively charged and will behave in a different way chemically from neutral atom. The number of protons in the nucleus of an atom (the atomic number , Z) defines which chemical element it is. There are just over 110 known chemical elements and these can be arranged in a classification sequence known as the periodic table. The number of neutrons in any given atomic nucleus can also vary. The total number of protons + neutrons is termed the atomic mass number (A). Most atoms have a prefered number of neutrons at which their nuclei are stable. Atoms with more or less neutrons than the stable configuration are known as isotopes and will often undergo radioactive decay. The simplest of all atoms is hydrogen and is a special case which has a nucleus of one solitary proton and a single electron in orbit around it. It is the only nuclide (species of nucleus) with no neutron. A stable isotope of hydrogen is called deuterium which has one neutron in its nucleus; tritium is an unstable (radioactive) isotope of hydrogen and has two neutrons. See also atomic absorption , atomic emission , atomic number , molecule .
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a nucleus, containing protons and neutrons  and around that nucleus, there are electrons. [Although it more correct to speak of electron clouds, as they are not really localized. ]
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Quarks are the basic building blocks of some other sub-atomic particles, like the proton. Quarks, unlike other particles, can not be divided.\n\nQuarks are best on crackers with just a dab of peanut butter.
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The most fundamental particles known to exist at the moment are quarks and leptons. Quarks are the things the make up the pieces of the nucleus in an atom and leptons include things like electrons.\n\nWithin a nucleus you will have heard of Protons and Neutrons ro collectively Nucleons. Well a quark is a sub unit of one of these so called "Nucleons". There are three quarks to every nucleon. There are many types of quark and these create many types of particles, most of which are extremely shortlived. You can learn more about the world of Particle Physics in the Particle Physics Adventure.\n\nhttp://particleadventure.org/particleadventure/
172336
I believe the answer is Osmium. He is asking for number of neutrons, not number of protons. Take the atomic mass, (Os = 190.23) And subtract the number of protons it has (Os = 76), giving you an answer of 114.
360394
A more generic term for the components of an atom is "sub-atomic particles."  I think that's the answer you're looking for.
948808
Electron is simply the smallest and ligthest subatomic particle inside every atoms. as you know, atom consists of protons (positively charged), neutrons (no charge) and electrons (negatively charged). you can imagine atoms to be like a planet which has meteors orbiting around it. the planet represent the nucleus which consists of the protons and the neutrons. and the meteors around are representing the electrons. due to its light weight, electrons move around in an incredible speed around the nucleus. however, electrons do not escaped from the nucleus because they are bounded by forces which keep them in tracks. you can check it out in www.wikipedia.com if you need more info on electrons :D . GL for ur science fair anw.