A watch glass of rock salt as used in a UK Secondary/High school.

---

Rock salt is the mineral (natural) form of sodium chloride (NaCl)

---

Size: 5184px × 3456px
Location: London, UK
Photo credit: © Maurice Savage / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: britain, british, chloride, education, glass, halite, high, nacl, rock, salt, sample, school, secondary, sodium, solid, stones, uk, watch