Volume be used to estimate changes in density


  1. Why can changes in volume be used to estimate changes in density?
  2. Where might errors creep into your observations?
  3. Why don't all liquids display a temperature versus density relationship similar to that of water?
  4. If a single molecule does not have a temperature, what does temperature measure?
  5. Why is ice less dense than water?
  6. What would happen to our apparatus if the water in it froze?
  7. Understanding Diffusion
  8. Is the relationship between time and average distance traveled linear?
  9. Is the relationship between time to travel a set distance and temperature linear?
  10. Would changing the distance travelled change your answer?
  11. In your experiments why did you not get exactly the same value for each measurement? What was the source of the variation? 
  12. Does the presence of variation mean that the system cannot be described mathematically? 
  13. How would decreasing the number of diffusing particular from 30 (as it is) to 5 alter your measurements? 
  14. How would increasing the number of diffusing particle from 30 to 1000 alter your measurements? 
  15. Einstein hypothesized that invisible particles were responsible for Brownian motion - was this scientific, postulating invisible particles?

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Biology: Volume be used to estimate changes in density
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