chem chap 1

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Across
  1. 4. anything with mass and that takes up space
  2. 6. supported by many experiments
  3. 8. a measurement that reflects the amt of matter
Down
  1. 1. tentative explanation
  2. 2. a standard for comparison
  3. 3. amt of matter and the force of gravity on it
  4. 5. study of matter and its changes
  5. 7. branch of chemistry dealing with Carbon