SCIENCE VOCABULARY

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Across
  1. 4. The process of gas cooling into a liquid
  2. 6. A force that slows motion surfaces rub together
  3. 8. Anything that has mass and takes up space
  4. 10. A factor that can change in an experiment
  5. 12. A testable educated guess
  6. 14. Combination of different substances
  7. 15. The smallest unit of matter
  8. 16. A group of atoms bonded together
Down
  1. 1. To reuse materials
  2. 2. The amount of mass in a given volume
  3. 3. a push or pull on an object
  4. 5. The layer of gases around the earth
  5. 7. A force that pulls objects to the earth
  6. 9. The process of water changing into a gas
  7. 11. The amount of matter in an object
  8. 13. A type of matter with specific properties