The Periodic Table

1234567891011121314151617181920
Across
  1. 2. A negatively charged ion
  2. 4. A scientific law that states that during a chemical reaction, matter cannot be created or destroyed but can be changed into a different form
  3. 8. Capable of being shaped
  4. 9. a bond formed by the transfer of electrons
  5. 12. An element or substance that conducts heat and electricity
  6. 13. A subatomic particle with zero charge.
  7. 14. An element that has some properties of a metal and some properties of a nonmetal
  8. 16. An atom that has gained or lost one or more electrons
  9. 17. Has no charge and are gases under normal conditions
  10. 18. A vertical column of elements in the periodic table
  11. 19. A horizontal row of elements in the periodic table
  12. 20. A bond formed when two atoms share valence electrons
Down
  1. 1. the electrons in the outermost shell, or energy level of an atom
  2. 3. Poor conductor of heat and electricity
  3. 5. Reactive and usually exist as compounds with other elements
  4. 6. A substance that cannot be broken down into a simpler substance by ordinary chemical means
  5. 7. A bond formed when two atoms share valence electrons
  6. 10. Number of protons plus the number of neutrons in the nucleus of an atom
  7. 11. The elements in between group 2 and group 13, whose ions usually form colorful solutions
  8. 15. Highly reactive group 17 or 7A elements