Quarks have been indirectly observed through particle accelerators and particle collision experiments, where their presence is inferred by the patterns of particles that are produced. Additionally, the properties of quarks, such as charge and spin, have been successfully predicted by the theory of Quantum Chromodynamics, providing further evidence for their existence.
Quarks are always found in groups because of a phenomenon called color confinement. This means that quarks cannot exist in isolation due to the strong force that binds them together. When quarks try to separate, the energy required to pull them apart becomes so great that it results in the creation of more quarks, forming new particles to keep the quarks in groups.
During the particle era, quarks were confined within particles such as protons and neutrons. They did not exist freely as individual particles.
As far as we know, quarks are the smallest particles to exist. We have found 6:- Top- Bottom- Up- Down- Strange- CharmEach of the quarks also has a property called color charge. These are red, green, and blue. Particles that are constituted of quarks must be color neutral. In all, there are 18 different possible types of quarks if one does not count antimatter. When antimatter is taken into account, that number increases to 36.
Protons and neutrons are composite particles make up of up and down quarks. There are two up quarks and one down quark in a proton, and two down quarks and an up quark in a neutron.
There are no quarks in an electron. Electrons are leptons, which are not made of quarks. Further, the electron is a fundamental particle, just like the quark. That means that neither quarks or electrons are made up of other particles, per the Standard Model of particle physics.
Actually quarks can exist freely.
No, it is not possible ,a proton is the combination of two up and one down quarks but quarks do not exist freely.
In an atom, the neutrons and protons are made up of up quarks and down quarks. Strange quarks, charms quarks, top quarks, and bottom quarks also exist, but do not play as much of a role in the structure of an atom.
No, they are now solid fact. Quarks are the fundamental particles which make up the protons and neutons of everything around us, as well as some other crazy particles such as the Higgs boson. There are some bosons (things made up of quarks) which are merely theoretical; we know they muct exist but have not yet found one, but quarks are definitely NOT fictional
Quarks are considered to be fundamental particles, and as such they do not really have a classical "size". Their masses can be compared, however, and they are not the same for all types of quarks.
Every particle that should exist if quarks are real has been found. No particle that should not exist if quarks are real has ever been found. The results of in-elastic scattering between hadrons fits perfectly with quark. The hypothesis of charm quarks predicted experimental results that were almost perfectly replicated with the discovery of the psi-particle. In other words, the quark hypothesis matches observation perfectly. That's about as strong of evidence as can exist.
Quarks are always found in groups because of a phenomenon called color confinement. This means that quarks cannot exist in isolation due to the strong force that binds them together. When quarks try to separate, the energy required to pull them apart becomes so great that it results in the creation of more quarks, forming new particles to keep the quarks in groups.
we do not really know
We don't know if they really exist, how they look like, what they really do, where they live, etc.
In the Standard Model, quarks are fundamental particles. As such, they are not made up other particles. They either exist as quarks, or not at all. Like all matter they can be converted into energy, but quarks are the building blocks of hadrons like the proton and neutron. Links can be found below to learn more.
We don't know. For all you know I might be a figment of your imagination and so might this answer. OR... I might be imaging you exist...
During the particle era, quarks were confined within particles such as protons and neutrons. They did not exist freely as individual particles.