Periodic Table Crossword

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Across
  1. 2. mass of the Nucleus
  2. 3. group 3 period 7
  3. 4. the ease and speed with which an element or compound combines with other elements and compounds.
  4. 6. a chart of elements showing the repeating patterns of their properties.
  5. 10. group 1 just Hydrogen
  6. 11. A small positively charged particle in the nucleus of an atom.
  7. 12. A small particle in the nucleus of an atom with no charge.
  8. 13. horizontal rows
Down
  1. 1. groups 13-17 found along the Zigzag
  2. 2. group number 2
  3. 3. the number of Protons and Electrons
  4. 5. A tinny negatively charged particle that moves around the nucleus of an atom.
  5. 7. group 3 period 6
  6. 8. vertical columns
  7. 9. the smallest particle of an element.