Parts of an Atom Crossword puzzle by jasper

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Across
  1. 2. a small localized object which can be described by several physical or chemical properties, such as volume, density, or mass.
  2. 5. the weighted average mass of the atoms in a naturally occurring sample of the element.
  3. 6. In the outer rings of the atom; Has a negative charge
  4. 10. an ordered arrangement of the chemical elements into rows and columns
  5. 12. Row in the Periodic Table
  6. 13. The charge number of an atomic nucleus
  7. 15. Column in the Periodic Table
Down
  1. 1. The middle of the atom
  2. 3. Electrons in the outermost shell, or energy level, of an atom.
  3. 4. a group of atoms bonded together
  4. 7. In the middle of the atom; Has a neutral charge
  5. 8. The basic building block of chemistry. Super duper extra small.
  6. 9. In the middle of the atom; Has a positive charge
  7. 11. an atom or group of atoms that carries a positive or negative electric charge as a result of having lost or gained one or more electrons.
  8. 14. an ion, or charged particle, with a positive charge.