John Huggins Periodic Table

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12345678910111213141516171819
Across
  1. 3. The sum of protons and neutrons
  2. 4. The collumns of the periodic table
  3. 5. An organized chart that lists all known chemical elements in order of increasing atomic number
  4. 7. The smallest particle of an element that retains the element's properties
  5. 9. They are the stair-step line
  6. 12. Right of the stair-step line(plus Hydrogen
  7. 13. Particles in the nucleus that are electrically charged
  8. 14. Left of the stair-step line(except Hydrogen)
  9. 16. Area around the nucleus of an atom where electrons are most likely to be found
  10. 17. Particles in the nucleus with a positive charge
  11. 18. The electrons located in the outermost part of the electron shell
  12. 19. The positively charged center of the atom
Down
  1. 1. A strong force of attraction that holds together oppositely charged ions
  2. 2. Particles with a negative charge that occupy the space around the nucleus
  3. 3. The most reactive group of metals;softer than most metals
  4. 6. Group 2 metals, but less reactive than group 1
  5. 8. The rows of the periodic table
  6. 10. An atom or molecule that has an electric charge due to the lose or gain of electrons
  7. 11. Atoms of the same element that have different number of neutrons
  8. 15. the number of protons an atom has