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4 Written questions

4 Multiple choice questions

  1. horizontal row of elements in the periodic table
  2. elements belonging to group two on the periodic table. They are less reactive and harder than alkali metals.
  3. recurring or reappearing from time to time
  4. non-metals, group 18, the most non-reactive elements

4 True/False questions

  1. Transition Metalshighly reactive, group 1


  2. Dmitri MendeleevRussian Chemist, demonstrated a connection between atomic mass and elemental properties arranged the elements in order of increasing atomic mass predicted the existence and properties of undiscovered elements, Russian chemist who developed a periodic table of the chemical elements and predicted the discovery of several new elements


  3. Halogensgroup 17; contains nonmetals; 7 electrons in its outermost energy level; very reactive; poor conductors of electric current; never in its uncombined form in nature; combine with most metals to form salts


  4. groupVertical column in the periodic table


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