Essential Terms for Chemistry Unit

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Across
  1. 2. an element that has factors of both metals and nonmetals
  2. 4. we're made of billions of these
  3. 6. aka a family on the periodic table
  4. 8. has a negative electric charge
  5. 9. russian chemist who developed the periodic table
  6. 10. a substance that changes during a reaction
  7. 11. an electron associated with an atom
  8. 15. the mass of an atom of a element
  9. 16. studied the atom and electron
  10. 18. the center of an atom
  11. 19. typically hard, shiny, ductile
  12. 20. formed in an atom or molecule by one or more electrons
  13. 22. absorption of heat
  14. 26. abbreviation of an element
  15. 27. has no electric charge
Down
  1. 1. mass is neither created nor destroyed by reaction
  2. 3. a substance deposited in solid from solution
  3. 5. an element that is not a metal
  4. 7. each numbered row is this
  5. 12. the number of protons in the nucleus of an atom
  6. 13. there are 118 of these on the back wall
  7. 14. has a positive electric charge
  8. 17. release of heat
  9. 21. any of the gaseous elements on the periodic table
  10. 23. group of atoms bonded together
  11. 24. composed of two or more elements
  12. 25. a new material formed in a chemical reaction