What properties of solids are reflected in the following proverbs? a) Friendship is like glass: if you break it, you cannot assemble it,

What properties of solids are reflected in the following proverbs?
a) Friendship is like glass: if you break it, you cannot assemble it,
b) In battle, iron is more expensive than gold.
c) Silver bends, but cast iron does not bend.

a) fragility; b) hardness; c) plasticity.

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