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5 Written questions

5 Matching questions

  1. The abbreviation for atomic mass unit is
  2. as the atomic masses of the elements in the periodic table increase, th number of atoms in a mole of each element
  3. Experiments with cathode ray led to the discovery of the
  4. The nucleus of an atom has all of the following characteristics except that it
  5. As the atomic number increases, the number of electrons in an atom
  1. a increases
  2. b remains the same
  3. c contains nearly all of the atom's volume
  4. d electron
  5. e amu

5 Multiple choice questions

  1. The number of protons in an atom is its atomic number
  2. 30
  3. retains the chemicl identity of that element
  4. law of multiple proportions.
  5. number of protons

5 True/False questions

  1. What did Rutherford conclude about the structure of the atomelectron cloud

          

  2. An alumin isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is40

          

  3. The electron was descovered byThomson

          

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

          

  5. Who expl;ained the behavior of positively charged particles being delected from a metal foil as the nucleus?passed through the foil

          

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