Unit 4 crossword extra credit

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Across
  1. 2. or brittle solids at room
  2. 8. A vertical column in the periodic table of the elements.
  3. 9. A negatively charged particle located outside an atom’s
  4. 10. An element that has properties of both metals and nonmetals.
  5. 11. the central region of an atom where most of the atom’s
Down
  1. 1. Atoms of the same element that have different numbers of neutrons.
  2. 3. An element that tends to be shiny, easily shaped,and a good conductor of electricity and heat.
  3. 4. A positively charged particle located in an atom’s nucleus.
  4. 5. Elements that usually are
  5. 6. A particle that has no electric charge and is located in an atom’s nucleus.
  6. 7. A horizontal row in the periodic table of the elements.