reaction that includes a change in an atom's nucleus

unstable nuclei lose energy by emitting radiation in spontaneous way

radiation deflected toward the negatively charged plate

contains 2 p+ and 2 n and has 2+ charge attracted to negatively charged plate

type of equation that shows atomic numbers and mass numbers of the particles involved, conserving mass number in nuclear equations

radiation deflected toward positively charged plate

electron w/ a 1- charge

high energy radiation that possesses no mass

negatively charged particles part of all forms of matter

smallest particle of an element that retains properties of the element

tiny, dene region in the center of the atom; positively charged; p+ and e- reside here

originating from cathode and traveling to anode

no electric charge; neutral; subatomic particle that has mass nearly equal to a proton

number of protons are equal to ?

number electrons are equal to ?

number of neutrons equal ?

what's the mass number of the isotope ?

what's the atomic number of the isotope ?

what's the mass number of the isotope: Iron-56

isotopes have the same atomic number but differ in the number of neutrons.

an average of the mass of all isotopes of that element accounting for abundance of each

identifies the atom

determines chemical behavior