Do photons have mass?

Subatomic particles are extremely small pieces of matter. These particles are smaller than, and generally parts of, atoms, the fundamental components of all ... The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules. The number of protons in the nucleus of the atom is ... ... Atomic mass-Atomic numbers = # of neutrons, rounded to a whole #. Ex: Calculate the number of subatomic particles present in an atom of aluminum. 26.98. 13. ΑΙ. All matter, with the exception of sub-atomic particles, is made up of atoms that contain an outer shell of electrons and an inner nuclear core. The two subatomic particles are the protons and neutrons. The atomic mass is essentially equal in magnitude to the protons and neutrons as the mass of an ... Jul 5, 2012 ... A fundamental particle that combines to form a range of other particles, including protons and neutrons, the particles that make up the atomic ... Jul 10, 2016 ... Yes. Atoms can be made through radioactive decay, fusion (joining two atoms into one larger one), and fission (splitting one atom into two ... Yes, the subatomic particles in an atom do move. Electrons, for example, move in areas around the nucleus called electron clouds or shells. The protons and ... Atoms are composed of three main subatomic particles: protons, neutrons, and electrons. · Protons and neutrons are grouped together in the nucleus of an atom, ... The three subatomic particles are protons, neutrons, and electrons. Tap ... How many subatomic particles are in the simplest atom? What element is the ...