My periodic table project

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Across
  1. 4. Actinides Radioactive, Grouped into a row not ____
  2. 5. Metals ____ (lose) electrons
  3. 8. made the first periodic table
  4. 10. Nonmetals ___(gain) electrons
  5. 13. Alkali earth metals Oxidize in air, relatively soft, ____ Valence electrons
  6. 16. Contain the largest atoms in the period(row)
  7. 19. Valence electrons are the ___ electrons
  8. 21. Ductile and Malleable, good conductors
  9. 22. are ___ of both metals and non metals
  10. 23. The tendency of an element to undergo ____ reactions
  11. 25. Most reactive nonmetals, 7 valence electrons
  12. 27. "Rare earth metals" React violently with most nonmetals
  13. 28. Man made, not found in nature
  14. 29. Ions are formed from a ____ of electrons
  15. 30. Have characteristic colors when excited
Down
  1. 1. Less reactive then alkali metals, not found alone in nature
  2. 2. Dull, low density, brittle and break easily
  3. 3. which have low melting points(are usually gases)?
  4. 6. Valence electrons are the electrons in the ___ energy level
  5. 7. Halogens have High electronegativity, their charge is ___
  6. 9. How is the modern periodic table organized?
  7. 11. Noble gases are ____less, odorless, tasteless
  8. 12. Metals that react vigorously with water to form hydrogen gas
  9. 14. Transition Metals come from ores in _____ crust
  10. 15. Their shape can be easy or hard to change
  11. 17. the first periodic table was made by increasing Atomic?
  12. 18. Good conductors of heat and electricity
  13. 20. Alkalimetals are Gray metals, soft, __ valence electrons
  14. 24. When this transfer occurs, the electron number changes, causing the atom to be
  15. 26. Metals are ___ and shiny?