Periodic Table MattLee

12345678910111213141516171819
Across
  1. 2. sub-atomic particle with no charge
  2. 4. # of protons = the ________
  3. 6. each horizon or row
  4. 8. sub-atomic particle with - charge
  5. 9. each vertical column
  6. 10. another name for metalloid
  7. 12. Shiny, conducts heat and electricity
  8. 14. substance that has identical building block (2 words)
  9. 17. element with the simplest atom formation
  10. 18. happening at reqular intervals
  11. 19. has definite volume and indefinite shape
Down
  1. 1. protons + neutrons
  2. 3. a property that is unique for each element
  3. 5. has properties of metals and nonmetals
  4. 7. a puresubstance that can not be separated into simpler substances
  5. 11. another word for group
  6. 13. has indefinite volume and shape
  7. 15. has definite volume and shape
  8. 16. dull, doesn't conduct heat and electricity
  9. 18. sub-atomic particle with + charge