Chapter 2: Atoms, Molecules, and IonsIn a cathode ray tube A) electrons pass from the anode to the cathode. B) electrons pass from the cathode to the
... [Show More] anode. C) protons pass from the anode to the cathode. D) protons pass from the cathode to the anodeThe scientist who determined the magnitude of the electric charge of the electron was A) John Dalton. D) Henry Moseley. B) Robert Millikan. E) R. Chang. C) J. J. ThomsonWhen J. J. Thomson discovered the electron, what physical property of the electron did he measure?Which of the following scientists developed the nuclear model of the atom? A) John Dalton D) Henry Moseley B) Robert Millikan E) Ernest Rutherford C) J. J. ThomsonRutherford's experiment with alpha particle scattering by gold foil established that A) protons are not evenly distributed throughout an atom. B) electrons have a negative charge. C) electrons have a positive charge. D) atoms are made of protons, neutrons, and electrons. E) protons are 1840 times heavier than electronsAn atom of the isotope 137Ba consists of how many protons (p), neutrons (n), and electrons (e)? A) 56 p, 137 n, 56 e D) 56 p, 56 n, 56 e B) 56 p, 81 n, 56 e E) 81 p, 56 n, 81 e C) 137 p, 81 n, 56 eGive the number of protons (p), neutrons (n), and electrons (e) in one atom of 238U. A) 146 p, 92 n, 92 e D) 146 p, 28 n, 146 e B) 92 p, 92 n, 92 e E) 238 p, 146 n, 238 e C) 92 p, 146 n, 92eWhich of the following are isotopes? A) 14C and 13C D) 12C and 12CO B) 14C and 14N E) 14N and 14N2 C) 14N and 14N 3-Complete the following chart, in order from left to right Isotope Mass Number Protons Neutrons ElectronsComplete the following chart, in order from left to right Isotope Mass Number Protons Neutrons ElectronsComplete the following chart, in order from left to right Ion Mass Number Protons Neutrons Electrons. The elements in a column of the periodic table are known as A) metalloids. B) a period. C) noble gases. D) a group. E) nonmetals.Which of the following elements is most likely to be a good conductor of electricity? A) N B) S C) He D) Cl E) FeWhich of the following elements is chemically similar to magnesium? A) sulfur B) calcium C) iron D) nickel E) potassiumWhich of the following elements is chemically similar to potassium? A) calcium B) arsenic C) phosphorus D) cerium E) cesiumAn anion is defined as A) a charged atom or group of atoms with a net negative charge. B) a stable atom. C) a group of stable atoms. D) an atom or group of atoms with a net positive chargeWhich one of the following is an ion? A) B3+ B) NaCl C) He D) 14C E) none of the aboveWhich one of the following elements is most likely to form a 2– ion? A) scandium B) selenium C) silicon D) strontium E) iodineWhat are the two different ions present in the compound CaS ? A) Ca+ , S- B) Ca2-, S2+ C) Ca- , S+ D) Ca2+, S2- E) Ca, S [Show Less]