Chemistry

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Across
  1. 5. a group of atoms bonded together
  2. 7. an element changing its shape is an example of__
  3. 8. something composed of different substances
  4. 9. positive electric charge
  5. 10. every column in the periodic table is a __
Down
  1. 1. something that makes or breaks bonds
  2. 2. how many __ are on the outermost shell
  3. 3. a solids ability to be stretched into a wire
  4. 4. how likely something is to undergo a chemical change
  5. 6. horizontal row on the table