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5 Written questions

5 Matching questions

  1. Isotopes are atoms of the same element that have different
  2. The nucleus of an atom has all of the following characteristics except that it
  3. A nuclear particle taht has about the same mass as a proton but with no electrical charge is called a(n)
  4. In the gold foil experiment, most of the particles fired at the foil
  5. as the atomic masses of the elements in the periodic table increase, th number of atoms in a mole of each element
  1. a passed through the foil
  2. b contains nearly all of the atom's volume
  3. c masses
  4. d neutron
  5. e remains the same

5 Multiple choice questions

  1. tightly packed protons and neutrons
  2. relative abundance
  3. Avogadro's number
  4. law of multiple proportions.
  5. Ernest Rutherford

5 True/False questions

  1. After measuing the ratio of the charge of a cathode ray particle to its mass, Thomson concluded that the particleshad a very small mass


  2. An alumin isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is27


  3. Who first propsed an atomic theory based on scientific knoledgeAvogadro's number


  4. The mass number of an atom is defined as itsnumber of protons


  5. Isotopes of an element contain different numbers ofneutrons