That depends. The smallest particle in the classic physics is te atom. In the modern physics is the quark (quark is the composition of an eletron). WHAT IS THE SMALLEST PARTICLE The quark
Quarks and Leptons are the smallest particles in the World. They are both different particles but are of the same size.
Atoms are NOT the smallest particle- they are the smallest COMPLETE particle. In an atomic reaction, the atoms are broken apart, and release energy.
Particle physics. Specifically, the Standard Model of Particle Physics was centered around the Higgs Boson- had the boson not been found to exist, then modern physics as we know it would be on very shaky ground.
Atom
No It is not true that atoms are the smallest particles in the planets. The smallest particles are electrons, protons, neutrons, and others.
There is none. To study particle physics you use the whole machinery of quantum physics, but written down in a different way. That means particle physicists use the formalism of quantum field theory, which is a more powerful way of doing quantum mechanics, it's just more useful in this context.
So far, the "quark" is believed to be the most tiny fundamental particle.
observable ? i'd say quarks.
The term 'particle' broadly encompasses any relatively small piece of matter, but in particle and nuclear physics, quarks and electrons are smallest, followed by protons, then neutrons.
Particle Physics
QUARKS are the smallest particles.they r known to be smaller than electrons,neutrons and protons.discovered way back in the 20th century
A quark is the smallest particle in matter.
An atom is the smallest particle of a substance.
The smallest particle of an element is called an atom.
The atom is the smallest known particle.
The Standard Model of Particle Physics gives a good list of particles and their masses.
The smallest particle in the atom is the electron.
Particle Physics - 2011 is rated/received certificates of: UK:PG