Periodic Table Crossword Milton

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Across
  1. 3. a vertical column
  2. 5. the smallest unit of a compuond
  3. 6. an atom that has gained or lost one or more electrons
  4. 8. an element or substance that conducts heat and electricty
  5. 9. that has mass and volume
  6. 11. the smallest unit of an element
  7. 13. substance that cannot be broken down into a simpler substance
  8. 14. electrons- electrons that are located in the outermost energy level an atom
  9. 15. table- a chart that organize information about all of the known elemnts
Down
  1. 1. an element that does not coduct electricity
  2. 2. mass- the number of protons and netrons in the nucleus of one atom
  3. 4. bond- a bond formed when two atoms share valence electrons
  4. 7. cloud - the region surrounding the nucleus of an atom where the electrons are located
  5. 9. an element that has some proprites of a metal
  6. 10. describes how likely an element is to form bonds with other elemnts
  7. 12. horizontal row (left to right) in the periodic table
  8. 16. symbol- represants the name of the element
  9. 17. elements or compounds that when put together unable to react