INTEGRATED SCIENCE REVIEW

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Across
  1. 3. a bond that involves sharing electrons among metals
  2. 4. a bond that involves giving and taking electrons
  3. 6. a state of matter with changing volume and shape
  4. 8. a model that tells us how many electrons there are and in what shells
  5. 9. type of variable that is the result
  6. 10. a testable prediction
  7. 13. a mixture that has elements that can be separated physically
  8. 14. what we compare our variables to
  9. 15. going from a gas to a liquid
  10. 18. a reaction that releases energy
  11. 20. the number of electrons on the outside of an atom
Down
  1. 1. a physical property that tells us how much matter is in something
  2. 2. something we can change in an experiment
  3. 4. an element that has lost or gained an electron
  4. 5. neutrally charged particles
  5. 7. going from a gas to a solid
  6. 11. a state of matter with fixed volume and shape
  7. 12. positive charged particles
  8. 13. a mixture where things are dissolved
  9. 15. a combination of two or more elements
  10. 16. a reaction that absorbs energy
  11. 17. a structure that tells us the valence electrons
  12. 18. Something that cannot be broken down even further
  13. 19. a bond that involves sharing electrons