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5 Written Questions

5 Matching Questions

  1. WHen a helium nucleus fuses with a beryllium nucleus what is formed?
  2. WHere do the elements come from?
  3. What are the two differences between Mendeleev's table and the modern periodic table?
  4. A supernova provides enough energy to create the ________ ____________
  5. The _________ of an element can be predicted from its location in the periodic table
  1. a properties
  2. b heaviest elements
  3. c stars
  4. d carbon
  5. e (1) new elements have been added as they were discovered (2) arranged in order of atomic number , NOT atomic mass

5 Multiple Choice Questions

  1. beryllium
  2. iron.
  3. the average mass of all the isotopes of an element
  4. plasma
  5. (1)atomic number (number of protons), (2) chemical symbol (3) name (4) atomic mass

5 True/False Questions

  1. By 1869 how many elements had been discovered?63


  2. What is plasma?the average mass of all the isotopes of an element


  3. In 1869 _________ published the first periodic table with ______ elements and three missing elements?families


  4. From left to right, the properties of elements in a period change in a _________properties


  5. The horizontal rows are called _________periods


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