Element crossword

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Across
  1. 3. The Russian Chemist who created the periodic table (two words).
  2. 4. an element (e.g. arsenic, antimony, or tin) whose properties are intermediate between those of metals and solid nonmetals or semiconductors.
  3. 5. The metals from group 2-12 that are not very reactive. (2 words)
  4. 6. the state or power of being reactive or the degree to which a thing is reactive.
  5. 7. opaque, lustrous elements that are good conductors of heat and electricity
  6. 9. The name of the 17th group in the periodic table and is extremely reactive.
  7. 10. an element or substance that is not a metal.
  8. 12. Number The number of protons and electrons in an atom, determines the element (2 words).
  9. 13. The name of the last group in the periodic table, which are not in the slightest reactive (2 words).
Down
  1. 1. The name of the elements in group 2. Ex: Be, Mg and Ca (3 words)
  2. 2. The name of the elements in group 1 excluding hydrogen, which are extremely reactive (2 words).
  3. 8. the mass of an atom of a chemical element expressed in AMU. (2 words)
  4. 11. The horizontal rows of the periodic table.