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An object is
strong
if an applied force is unable to deform or break it. A nylon
windbreaker is strong, since pulling on it does not change its length.
Sometimes the manner of
applying a force makes a difference to the strength of an object. Ceramics can bear a lot of
weight, but will break if stretched or bent. Nylon survives compression, pulling and twisting.
Color
,
texture
, and
reflectivity
can be observed by shining light on a sample.
Mirrors
are colorless, smooth, and shiny.
Electrical conductivity
is detected by applying a voltage
across an object. Applying heat to a sample reveals its ability to
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