What have salt, iron, diamonds and a snow flake in common? At first glance, not very much.
But if you take a closer look, you will recognise one feature they have in common: all these materials consist of crystals.
Angular and also symmetrical shapes are the main characteristics of crystals. Often they have smooth, flat faces and even rectangular edges.
- Article no.: 4673657
- Targetgroups: Sek I,Sek II
- Length: 26:14 min
- Languages:
