PT Definitions

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Across
  1. 3. Solid, hard, high melting & boiling point, conducts heat & electricity well, shiny
  2. 4. Number of Protons
  3. 7. Neutral; inside nucleus; Calculate mass-atomic #
  4. 8. Liquid or gas, low melting & boiling point, good insulator; does not conduct well
  5. 9. Row on periodic table; determines # orbital rings
  6. 13. Layers of electron orbital paths around nucleus
  7. 14. Non reactive because of a full shell of valence electrons
  8. 15. Weak properties of both metal and nonmetal
  9. 16. Breaks easily; Ex. glass
  10. 17. Protons & neutrons in nucleus
Down
  1. 1. Negative; outside nucleus
  2. 2. Electrons in outermost shell; determines reactivity & bonding
  3. 3. Can be hammered into sheets; Ex. Aluminum Foil
  4. 5. Column on periodic table
  5. 6. Positive; inside nucleus
  6. 10. Smallest building block of matter
  7. 11. Can be pulled into wire; Ex. Copper
  8. 12. Anything that has mass and takes up space