atomic particles

Question 1

atom

Answer 1

neutral; equal numbers of protons and neutrons

Question 2

ion

Answer 2

net charge: produced by the gain or loss of electrons
-cation: loss electrons (+)
-anion: gain electrons (-)

Question 3

isotope

Answer 3

an atm w/ a specific number of neutrons; within a particular element, there can be many isotopes; they have same number of protons but different numbers of neutrons (therefore different mass numbers)

Question 4

mass number

Answer 4

A
-THE SPECIFIC NUMBER of prtons and neutrons in the nucleus of a specific atom (isotope)
-within an ELEMENT there can be many isotopes- different A, same Z

Question 5

average relative atomic mass

Answer 5

AR
-measured in units of “U”
-somtimes called atomic weight
*WEIGHTED average relative mass of ALL naturally occurring isotopes
-when rounded to whole number, indication of the mass number for the MOST COMMON

Question 6

radioisotope

Answer 6

-radioactive isotope of an element, occuring naturally or synthetic
-spontaneously emits radiation as unstable nucleus decays