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An [[atom]] is made of three particles, protons, [[neutron|neutrons]], and [[electron|electrons]]. Protons and [[neutron|neutrons]] make up the nucleus of the atom.<ref>Serway, Beichner: ''Physics for Scientists and Engineers'', 5th edition</ref>
A proton is made up of two up [[quark|quarks]] and one down [[quark]]. According to the [[Standard Model]] of particle physics, quarks are [[fundamental particles]], meaning that they cannot be split into smaller particles.<ref>Krane: ''Modern Physics'', 2nd edition</ref>
==Properties==
*mass: 1.6726231e-27 kg
*charge: 1.60218925e-19 C
==References==
<references/>
[[Category:Physics]]
[[Category:Chemistry]]
A proton is made up of two up [[quark|quarks]] and one down [[quark]]. According to the [[Standard Model]] of particle physics, quarks are [[fundamental particles]], meaning that they cannot be split into smaller particles.<ref>Krane: ''Modern Physics'', 2nd edition</ref>
==Properties==
*mass: 1.6726231e-27 kg
*charge: 1.60218925e-19 C
==References==
<references/>
[[Category:Physics]]
[[Category:Chemistry]]