Nucleus
The particle in an atom that cannot change is the number of protons. If that changes, it is no longer the same element.
An iron atom is the smallest iron particle that still has the properties of iron.
This particle is the atom.
An atom is the smallest particle that comprises a chemical element.Source:http://en.wikipedia.org/wiki/Atom
It is called proton.It is found in the nucleus of each atom, along with neutrons, but is also stable by itself and has a second identity as the hydrogen ion, H+.
The particle in an atom that cannot change is the number of protons. If that changes, it is no longer the same element.
Protons have positive charge
The subatomic particle in an atom that has a negative electrical charge is called an electron. It's located outside the nucleus and orbits around it in various energy levels.
The smallest particle of an element is called an atom.
An atom is a particle, the smallest particle that can exist by itself.
Yes, a particle can be a single atom.
In the atom the particle without electrical charge is the neutron.
No, a particle is not the same as an atom. A particle is a small piece of matter, while an atom is the smallest unit of an element that retains the properties of that element.
The smallest particle in the atom is the electron.
An iron atom is the smallest iron particle that still has the properties of iron.
that would be an electron, protrons are positive and nutrons you guessed it neutral
the positivly charged particle in the nuclus of an atom is a proton