[logo] Discussion of 10/10 Group Exercise

Classification of Solids

Observe and test the four cylindrical samples provided.

The four cylinders were samples of

Try to identify as many physical attributes as possible.

Possible attributes to mention:

  1. Color
  2. Specular Reflectivity -- shiny?
  3. Optical Absorption -- transparent?
  4. Appearance of sandpaper test (color of fine particles)
  5. Surface texture? -- property of sample or of preparation?
  6. Density -- weight
  7. Hardness -- scratch test
  8. Electrical conduction -- resistance? metal or not?
  9. Thermal conduction -- coolness to touch
  10. Resilience/Dissipation -- bounce test, dent test
  11. Speed of sound/attenuation -- "ping" test
  12. Malleable? -- scratch with razor blade, brittle? gummy?
  13. Smell?
  14. Taste?
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Last updated Nov. 7, 1996.
Copyright George Watson, Univ. of Delaware, 1996.