1. Chemistry Individual Project Work
Sammi Chan
F.3C (1)

2. NaCl
Name: Sodium Chloride
Formula: NaCl
Electronic Diagram:

3. Physical Properties Melting point: 801°C Boiling point: 1413°C
Physical state at room temperature: solid
Colour: White
Density: g cm−3
Solubility in water: dissolve
Electrical conductivity: not good (non metal)

4. Chemical properties
Nacl is formed by the reaction of the hydroxide with hydrochloric acid.
reactive towards water
Acidic:
Basicity:
is currently mass-produced by evaporation of seawater or brine from other sources

5. Uses:
In cooking
use as preservative ---- to inhibit the growth of bacteria
used as a cheap and safe desiccant because of its hygroscopic properties
draws water out of bacteria through osmotic pressure

6. Special characteristic
Salt is added to stabilize the soil and to provide firmness to the foundation on which highways are built.
The salt acts to minimize the effects of shifting caused in the subsurface by changes in humidity and traffic load.

7. Resources Wikipedia: http://en.wikipedia.org/wiki/Sodium_chloride
Webelement

8. The End