Blue Book Revew Modules 1-7

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Across
  1. 3. a well-tested explanation of a phenomenon in the natural world
  2. 4. _____ = mass/volume
  3. 6. A possible, testable explanation, educated guess
  4. 7. ______ number= the number of protons in an atom
  5. 9. a push or pull that acts on an object
  6. 11. a point against which motion is measured
  7. 13. these compounds are made of only two elements
  8. 15. the state of matter in which a substance has a definite volume
  9. 16. the substance in a solution that gets dissolved
  10. 18. the change in an objects velocity over time
Down
  1. 1. substances that undergo a chemical change
  2. 2. the smallest unit of a chemical compound, composed of two or more atoms bonded together
  3. 5. the smallest chemical unit of an experiment
  4. 8. The gathering of information using senses or instruments
  5. 10. this reaction type absorbs energy from its surroundings
  6. 12. for every action there is an _____ and opposite reaction
  7. 14. this energy type is stored in chemical bonds
  8. 17. A factor that can change in an experiment