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4 Written questions

4 Multiple choice questions

  1. highly reactive, group 1
  2. proposed modern periodic table, arranged table in order of atomic number instead of mass, came up with periodic law--physical and chemical properties of the elements are periodic functions of thier atomic number
  3. a tabular arrangement of the chemical elements according to atomic number as based on the periodic law
  4. elements belonging to group two on the periodic table. They are less reactive and harder than alkali metals.

4 True/False questions

  1. Periodichorizontal row of elements in the periodic table


  2. Noble Gassesgroup 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


  3. periodrecurring or reappearing from time to time


  4. 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