Chemistry Unit

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Across
  1. 1. substance that reacts
  2. 6. number of protons and electrons
  3. 8. atomic particle, carries negative charge
  4. 9. center of an atom
  5. 11. reaction that absorbs energy
  6. 14. nothing disappears, something can only become something else
  7. 20. rows on Periodic Table
  8. 21. substance, malleable, ductile
  9. 22. combination of two or more different elements
Down
  1. 2. gas with full outer orbital
  2. 3. mass of one atom of a particular element
  3. 4. substance, brittle, non-malleable, non-ductile
  4. 5. electrons in outermost orbital
  5. 7. columns on the Periodic Table
  6. 10. atomic particle, carries no charge
  7. 11. basic substance
  8. 12. combination of one or more atoms
  9. 13. adding a thin layer of metal to the surface of another metal
  10. 15. ring of electrons
  11. 16. reaction that releases energy
  12. 17. the smallest part of an element, cannot be broken
  13. 18. cross between metal and nonmetal
  14. 19. shortened element name
  15. 23. atomic particle, carries positive charge