Periodic Table

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Across
  1. 1. model that refers to treatment of electrons as particles that orbit the nucleus
  2. 5. negatively charged particle in atom
  3. 7. earth metals.
  4. 8. word used to describe the physical property where is easily breaks apart
  5. 9. a one or two letter abbreviation.
  6. 10. subatomic particle with no electric charge
  7. 11. properties of how the element/compound reacted with others
  8. 15. used to describe when a solid is put into a liquid and creates a solution
  9. 17. sum of the number of protons and neutrons in nucleus
  10. 19. last name of Russian scientist credited with periodic table
  11. 20. solution with over 7 pH
  12. 21. columns on the periodic table of elements
Down
  1. 2. substance made only of one type of atom
  2. 3. positively charged particle in atom
  3. 4. a group of atoms
  4. 6. silver colored metal usually tarnished by oxidation
  5. 8. temperature where liquid turns into a gas
  6. 10. center of atom
  7. 12. smallest particle of an element.
  8. 13. rows of the periodic table
  9. 14. measure of th number of particles as a miss in a given volume
  10. 15. scale for measuring temperature
  11. 16. substance made of two or more elements.
  12. 17. number that tells u number of protons and electrons.
  13. 18. light, silver gray metal with atomic number of 4(Be)