The Structure of the Atom Crossword Puzzle
QUESTIONS LIST: atom: the smallest particle of an element that retains the properties of the element, cathode: _ ray originating from the cathode and traveling to the anode, electron: negatively charged particles that are part of all forms of matter, nucleus: center of the atom, proton: is a subatomic particle carrying a charge equal to but opposite that of an electron, neutron: is a subatomic particle that has a mass nearly equal to that of a proton, but it carries no electric charge, atomic number: the number of protons in an atom, isotopes: atoms with the same number of protons but different numbers of neutrons, mass number: is the sum of the atomic number and neutrons in the nucleus, atomic mass: the weighted average mass of the isotopes of that element, radiation: the rays and particles emitted by the radioactive material, nuclear: the reactions that involve a change in an atom’s nucleus, decay: radioactivity _ , when unstable nuclei lose energy by emitting radiation spontaneously, alpha particle: contains two protons and two neutrons, beta particle: is an electron with a 1- charge, gamma: _ ray is high-energy radiation that possesses no mass and is denoted by the symbol y.