Periodic Table

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Across
  1. 3. a stable particle with positive charge
  2. 5. anything but metal
  3. 6. is a magnitude of electric charge associated with a single electron. Similar to time, length or mass
  4. 8. the quantity of unbalanced electricity in a body (either positive or negative) and construed as an excess or deficiency of electrons
  5. 9. the sum of the number of neutrons and protons in an atomic nucleus
  6. 11. a particle that is electrically charged positive or negative
  7. 14. Gases any of the chemically inert gaseous elements of the helium group in the periodic table periodicity the quality of recurring at regular intervals
  8. 17. any number of entities (members) considered as a unit
  9. 20. atom with same atomic number, different number of neutrons
  10. 23. a definite stable energy that a physical system can have
  11. 25. (physics) a physical theory that certain properties occur only in discrete amounts (quanta)
  12. 26. any of the strongly basic metals consisting of beryllium, magnesium, calcium, strontium, barium, and radium.
  13. 27. arrangement of chemical elements according to atomic number
  14. 28. the smallest component of an element
  15. 29. exhibiting or caused by emissions in nuclear decay
  16. 31. any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions
Down
  1. 1. quantity of protons in the nucleus of an atom of an element
  2. 2. a subatomic particle with zero charge
  3. 4. the electrons in the outermost shell, or energy level, of an atom.
  4. 6. a substance that cannot be separated into simpler substances
  5. 7. any of various chemical elements that have valence electrons
  6. 10. consist of electrically positive protons and electrically neutral neutrons.
  7. 12. an amount of time
  8. 13. a whole formed by a union of two or more elements or parts
  9. 15. unit of mass for expressing masses of atoms or molecules
  10. 16. a nonmetallic element that has some of the properties of metal
  11. 18. a collection containing a variety of sorts of things
  12. 19. A group of electrons circulating around a nucleus or a molecule.
  13. 21. a chemical element or alloy that is usually a shiny solid
  14. 22. any of the monovalent metals of group I of the periodic table (lithium or sodium or potassium or rubidium or cesium or francium)
  15. 24. resistant to change of position or condition
  16. 30. an elementary particle with negative charge