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5 Written questions

5 Matching questions

  1. After measuing the ratio of the charge of a cathode ray particle to its mass, Thomson concluded that the particles
  2. Isotopes of an element contain different numbers of
  3. Isotopes are atoms of the same element that have different
  4. the composition of the two oxides of lead, PbO and PbO2, are explained by the
  5. As the atomic number increases, the number of electrons in an atom
  1. a increases
  2. b had a very small mass
  3. c masses
  4. d neutrons
  5. e law of multiple proportions.

5 Multiple choice questions

  1. neutron
  2. Ernest Rutherford
  3. electron
  4. retains the chemicl identity of that element
  5. relative abundance

5 True/False questions

  1. An atom's density is based upon itsamu


  2. Which of the following is NOT part of Dalton's Theory? In cheimcal reactions, aroms are combined, seperated, or rearranged.
    All matter is composed of extremely small particles called attoms
    Atoms cannot be divided, created or destroyed
    The number of protons in an atom is its atomic number
    The number of protons in an atom is its atomic number


  3. Most of the volume of an ato is occupied by theelectron cloud


  4. The abbreviation for atomic mass unit isabout the same as that of a proton


  5. According to Dalton's atomic theory, atomsnumber of protons