Atoms and PT Unit Review

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Across
  1. 4. The smallest particle in which an element can be divided and still remain as the same element
  2. 5. total number of protons and neutrons in an atom's nucleus
  3. 9. a negatively charged subatomic particle that revolves around the nucleus
  4. 10. a subatomic particle with no electrical charge
  5. 12. elements that have some properties of metals and some properties of nonmetals
  6. 14. a bond that forms when electrons share valence electrons; only nonmetals
  7. 15. an interaction that holds atoms or ions together
  8. 16. elements that are shiny and conduct heat and electricity well
  9. 17. a bond that forms when electrons are transferred from a metal atom to a nonmetal atom
Down
  1. 1. electrons in the outermost energy level
  2. 2. poor conductors of heat and electricity
  3. 3. horizontal row of elements on the PT
  4. 6. a group of atoms held together by chemical bonds
  5. 7. vertical column of elements on the periodic table
  6. 8. number of protons in the nucleus of an atom
  7. 11. a positively charged subatomic particle that determines an element
  8. 12. weak bond that forms between metals when outermost energy level overlap; valence electron "swim" to hold the ions together
  9. 13. a particle with a positive or negative charge