This Crossword Puzzle Matters

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Across
  1. 3. A building block of matter
  2. 6. (BONUS WORD!) THE BEST SCIENCE TEACHER EVER!!!
  3. 7. A phase where it takes the shape of its container
  4. 10. The amount of matter in an object
  5. 11. A change in matter that does involve revising atoms
  6. 13. A scientific way of finding volume
  7. 15. Two different types of matter building blocks smooshed together
  8. 17. A change in matter that doesn't involve revising atoms
Down
  1. 1. A substance that can easily be separated
  2. 2. A substance that can't easily be seperated
  3. 4. How much space an object takes up
  4. 5. How much space an object or substance takes up in relation to the amount of matter in that object or substance
  5. 8. A phase where atoms only vibrate
  6. 9. A building block of the UNIVERSE (Not matter), usually found on a certain table
  7. 12. A phase where atoms move freely
  8. 14. Has mass and takes up space
  9. 16. How heavy an object is