Question

You are a researcher for a golf club manufacturer. You are given two identical looking cubes of a metal alloy. You are informed that they are made of the exact same material, but one is crystalline, whereas the other is amorphous. It is your job to determine which one is amorphous this one is more stress-resistant and is useful in reinforcing golf clubs. Which of the following is the best way to determine which is which?
a. Determine the density of each cube. The more dense one is the amorphous solid.
b. Melt both cubes and look for a broader range of melting temperatures. The one that melts over a broader range of temperatures is the amorphous solid.
c. Determine the density of each cube. The less dense cube is the amorphous solid.
d. Melt both cubes and measure the range of melting temperatures. The one that melts over a narrower range of temperatures is the amorphous solid.

Answer 1

Ans = (c)
In general due to irregular arrangements of particles amorphos soilds often produce more voids than the regular crystal does and in most of the cases their is significant difference between the densities of amorphous and crystalline solid.amorphous due to more voids has lesser density.


When you melt the cube to identify them , when heated at that temperature it can destroy the atomic geometry, so the differences would disappear when you cooled them down to the solid form again.