Properties Crossword

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Across
  1. 2. What are the columns called in the periodic table?
  2. 5. What element has an atomic mass of 80?
  3. 7. What grouping shows a lot of variation in their properties?
  4. 9. What is the largest family in the periodic table?
Down
  1. 1. What element has 47 protons?
  2. 3. What are the horizontal rows referred to in the periodic table?
  3. 4. Who is credited for creating the periodic table?
  4. 6. What grouping makes up 75% of the elements in the periodic table?
  5. 8. How many families make up the periodic table?
  6. 10. What chemical element has the symbol Ti?