Waves and Energy

123456789101112131415161718
Across
  1. 2. atoms always have the same number of protons and electrons, this is called the ___ number.
  2. 5. These types of metals are found in the middle of the periodic table
  3. 9. these are poor conductors
  4. 10. a neutral particle in the nucleas of an atom
  5. 12. positively charged
  6. 13. family Another word for family
  7. 14. atomic number is 1
  8. 18. these have properties of both metals and nonmetals
Down
  1. 1. the abreviation for the elment
  2. 3. the ___ number of how much an element weights
  3. 4. What was Jhon B's tressure to find in outer banks
  4. 5. what period is sodium in?
  5. 6. What kind of metal is Calcium?
  6. 7. atoms arranged ont he periodic table
  7. 8. a verticle column on the periodic table
  8. 11. What is Beryliums atomic number?
  9. 15. The center of an atom
  10. 16. used in balloons
  11. 17. a horizontal row ont he periodic table.