All About Atoms Crossword Puzzle

QUESTIONS LIST: orbital : electrons are found here, atomic number : number of protons in a nucleus of an atom, cation : positively charged ion, neutron : particle in an atom's nucleus with no charge, anion : negatively charged ion, mass number : protons + neutrons in a nucleus, mole : 6.02 x (10)23, electron : negatively charged particle found in the shell, valence electron : an atom in the outer shell, isotope : two atoms of the same element having different numbers of neutrons, photon : a packet of light, proton : positively charged particle in an atom's nucleus, nucleus : contains protons and neutrons