Chapter 9 Caleb Ackerman

12345678910
Across
  1. 3. big particles that have no electrical charge
  2. 7. how many protons are in the element
  3. 8. an electron in the outermost level of an atom
  4. 10. an atom that carries an electrical charge
Down
  1. 1. how many electrons the element has
  2. 2. equal to the number of protons plus neutrons
  3. 4. average mass of the naturally occurring isotopes of an element
  4. 5. big particles that have a positive charge
  5. 6. tiny particles that have a negative electrical charge
  6. 9. any of the possible energies an electron may have in an atom