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5 Written questions

5 Matching questions

  1. Anions
  2. Physical Properties
  3. Mole
  4. Elements
  5. Nonmetals
  1. a a negatively charged atom or molecule
  2. b a substance that cannot be broken down into simpler substances by chemical means
  3. c the number equal to the number of carbon atoms in exactly 12 of pure C
  4. d elements that do not exhibit the properties of conductivity, malleability and ductility
  5. e any property of matter that doesn't change its chemical composition

5 Multiple choice questions

  1. a neutral particle located in the nucleus with a charge of zero
  2. the systematic distribution of electrons in the energy levels of an atom
  3. in electromagnetic radiation, the number of waves per second or cycles per second
  4. a large number that equals the number of particles in a mole 6.022 X 10^23
  5. the energy requried to remove an electron from a gaseous atom at ground state

5 True/False questions

  1. Nucleusthe dense core of an atom that contains protons and neutrons


  2. Isotopesatoms of the same element with identical atomic numbers but different atomic masses due to different number of neutrons in the nucleus


  3. Cationsa negatively charged atom or molecule


  4. Compounda substance that consists of two or more elements chemicallhy bonded together in definite proportions


  5. Metalsa class of materials that exhibit the properties of conductivity, malleability and ductility


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