evaluation : https://quizizz.com/admin/quiz/5c9d5baab2e4c6001afc0f9f/biomolecules

correction

1.2 - ordonated structures : cristals

salt crystal

video 6'22: https://youtu.be/euAxX4yGEKs?si=ZosasylAYDR12aK0 Chemistry of Salt (NaCl)

This NBC News Learn video explains and illustrates the molecular structure of sodium chloride (NaCl) crystals; the structure and symmetry of crystal lattices; and why one crystalline solid, salt, melts another, ice.

text : https://seasalt.com/salt-101/about-salt What is Salt?

photos : https://www.cellsalive.com/crystals.htm Landscapes of Polarization Microscopy

When oriented molecules such as crystalline chemicals are placed between two polarizing filters, the crystals exhibit amazing colored landscapes or subtle patterns. Shown approximately 10 to 50 times actual size, the chemicals on this page were photographed between "crossed" polarizing filters.