Nuclear Crossword

Name_______________________________________Class_______________________Date__________________ Chemistry and Biology Crosswords copyright 2005 by Frank Virzi Nuclear 1 3 5 6 7 8 12 15 16 ACROSS April 26, 1986 headline news topic. The 99m isotope of it is used for more than 70% of all nuclear medicine tests worldwide. Acronym mentioned in (A) American Journal of Roentgenology, (B) Journal of the American Psychoanalytic Association, and (C) Billboard Magazine There are more of them in a pound of D2O than in a pound of H2O. The mass of an alpha particle, in amu. Number of beta particles emitted when an atom of Co-60 decays to Ni-60. Charge of the ejected particles that result from the fusion of four H-1 nuclei to form one He-4 nucleus. "We readily proved that pitch-blende contains very radioactive substances, and that there were at least three. That which accompanies the bismuth extracted from pitch-blende we named Polonium; that which accompanies barium from the same source we named Radium; finally, M. Debierne gave the name of Actinium to a substance which is found in the rare earths obtained from the same ore." A 90Sr+2 ion has 38 of them. 18 19 1 2 4 7 Co-60 emission. They have less energy than gamma rays, but more than FM. DOWN Metal used for neutron absorption in nuclear power plant control rods. He studied alpha particle scattering. Exposure to this element caused a downed aviator to become a 50 foot tall giant with only one eye in the 1956 movie, "The Cyclops," starring Lon Chaney Jr. Number of half-lives it would take an 800 Ci source of Tc-99m to decay down to 25 Ci. 910 11 13 14 17 Source of energy at the Springfield Nuclear Power Plant, which is owned by Charles Montgomery Burns. Number of protons in a fluoride ion nucleus. The second most abundant element in the universe. Rutherford aimed it at N-14 to produce O-17 and H-1. When this is given off, a neutron is converted into a proton. Number of hours it would take 2 mCi of Tc-99m to decay to 1 mCi.Name_______________________________________Class_______________________Date__________________ Chemistry and Biology Crosswords copyright 2005 by Frank Virzi Nuclear