The Periodic Table And Bonding

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Across
  1. 5. Created in an atom when it has more electrons than protons.
  2. 8. The number of protons in the nucleus.
  3. 11. A chemicle bond formed when atoms share three pairs of electrons.
  4. 13. A chemical bond formed when atoms share one pair of electrons.
  5. 14. The average mass of all the isotopes.
  6. 15. A table that shows the elements.
  7. 18. The possible location around a nucleus where electrons may be found.
  8. 20. Electrons on the outermost energy level of an atom.
  9. 21. The smallest part of an element.
  10. 22. The center part of the atom where protons and neutrons are located.
Down
  1. 1. Uses dots to represent valence electrons around an element's atomic symbol.
  2. 2. A chemical bond formed when atoms share electrons.
  3. 3. The smallest particle of a compound that retains all the properties of the compound.
  4. 4. A chemical bond formed when atoms share two electrons
  5. 6. A pure substance made of only one kind of atom.
  6. 7. Negatively charged particles located outside the nucleus.
  7. 9. A charged atom due to the loss or gain of negative electrons.
  8. 10. Atoms of the same element that have different numbers of neutrons.
  9. 12. Created in an atom when it has more protons than electrons.
  10. 16. A chemical bond resulting from the attraction between oppositely charged ions.
  11. 17. Positively charged particles located in the nucleus of an atom.
  12. 19. Particles of no charge (neutral) located in the nucleus of an atom.