puzzle

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Across
  1. 8. can be extended or shaped
  2. 9. a variable
  3. 10. subatomic particle that has positive charge
  4. 11. horizontal columns
  5. 12. materials that have conductivity
Down
  1. 1. number used to
  2. 2. mark or sign
  3. 3. reflected light
  4. 4. vertical columns
  5. 5. easily broken or damaged
  6. 6. has mass and volume (takes up space)
  7. 7. table- shows chemical elements organized