Physical Science Spring Semester Review

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Across
  1. 4. The height of a wave
  2. 6. The rate at which work is done, measured in watts
  3. 9. The number of waves that pass in one second, measured in Hz.
  4. 15. Organic molecule use to build and maintain body structures
  5. 17. pure substance made of two or more elements chemically bonded
  6. 19. The rate of change of an object’s velocity over time
  7. 21. A group of organic molecules that include fats, oils, and waxes
  8. 23. A reaction in which two simple substances form a more complex one
  9. 24. Substances that form in a chemical reaction
  10. 25. A mixture where the composition is not uniform throughout
Down
  1. 1. Represents a chemical reaction using symbols
  2. 2. Change of state from solid to liquid
  3. 3. Change of state from a liquid to a solid
  4. 5. The sum of all of the forces acting on an object
  5. 7. A reaction in which two ions change places with each other (_________ displacement)
  6. 8. An insoluble solid that forms out of a solution in a chemical reaction
  7. 10. Building blocks of organic molecules
  8. 11. The distance from crest to crest on a wave
  9. 12. The change in position of an object
  10. 13. Energy associated with motion
  11. 14. A pure substance made of only one kind of atom
  12. 16. Molecules with the same formulas but different structures
  13. 18. A reaction in which one substance breaks down into simpler ones
  14. 20. The amount of matter in an object
  15. 22. Change of state from a gas directly to a solid