Hard candy is glass.

Scientific American magazine also shared a link.

Did you know that hard candy is actually a glass? | Crude Matter, Scientific American Blog Network

blogs.scientificamerican.com

As Halloween is right around the corner, here's a video from ByteSizeScience on how hard candy is made:http://www.youtube.com/watch?v=VY8q0hN6KwASome things of note: (1) Hard candy is technically a ...