sulfide ion
Yes, a particle can be a single atom.
Yes, a particle can be a single molecule.
A single dust particle is called a "speck" or "particle."
Yes, a particle can consist of only a single atom.
A Beta particle is either an electron or a positron (depending on the atom that it originally came from), but usually an electron. This electron will bond with most atoms that it comes into contact with, thus ionizing that atom. This can be very damaging to cells, because it ionizes atoms within the cells that can alter the solubility of that atom, or alter the acidity of the water with in the cell. This can cause the cell to flatout die, or, if the beta particle interacts with the DNA within the cell, mutate the cell and cause cancer. Of cource, a single beta particle ionizing a single particle is no threat to a living person, it is when enough of these effect enough cells that problems arrise.
Two or more atoms joined into a single particle from what
Yes. A single gas particle experiences gravitational force.
A single particle of light is called a photon. Photons are the basic unit of light and do not have mass.
atom
None. A beta particle consists of a single electrons or positron.
A single cell virus particle is called a virion. It consists of genetic material enclosed in a protein coat.
Yes, sulfate IS one (ionic) particle