Classification of Solids
Observe and test the four cylindrical samples provided.
The four cylinders were samples of
- aluminum
- brass
- Plexiglas
- Bakelite
Try to identify as many physical attributes as possible.
Possible attributes to mention:
- Color
- Specular Reflectivity -- shiny?
- Optical Absorption -- transparent?
- Appearance of sandpaper test (color of fine particles)
- Surface texture? -- property of sample or of preparation?
- Density -- weight
- Hardness -- scratch test
- Electrical conduction -- resistance? metal or not?
- Thermal conduction -- coolness to touch
- Resilience/Dissipation -- bounce test, dent test
- Speed of sound/attenuation -- "ping" test
- Malleable? -- scratch with razor blade, brittle? gummy?
- Smell?
- Taste?