How do you differentiate between a glass and a crystal?

Answer:
if you are talking about the chemistry of the problem: a glass has no structure (amorphous state).a cristal (AKA solid state) has structure, in fact a crystal can show X-rays diffraction.
First answer by Boxerdave1085. Last edit by Boxerdave1085. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 1 [recommend question].