Periodic Table Crossword Puzzle

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Across
  1. 6. Found in fireworks, batteries, flashbulbs
  2. 9. all have same basic properties of metals
Down
  1. 1. Many are man-made in labs
  2. 2. Becomes more rare as you move down the table
  3. 3. all nonmetals that easily combine with other elements, often from Alkali metals
  4. 4. Vertical columns on the Periodic Table
  5. 5. Called Rare Earth Metals
  6. 7. any substance made up of only 1 type of atom
  7. 8. Horizontal rows on the Periodic table
  8. 10. Has 1 Valence electron