In the form of edible or table salt it is commonly used as a condiment and food preservative. Large quantities of sodium chloride are used in many industrial processes, and it is a major source of sodium and chlorine compounds used as feedstocks for further chemical syntheses.n the language of close-packing, the larger chloride ions are arranged in a cubic array whereas the smaller sodium ions fill all the cubic gaps (octahedral voids) between them. This same basic structure is found in many other compounds and is commonly known as the halite or rock-salt crystal structure.
1 Most dental schools are 4 years, a few are 3. About half of the orthodontic schools are 2 years and the rest are 3 years. 2  it takes 4 years of undergraduate education (usually, it can take 2-3 if you have exceptional credentials) and then 3-4 years in dental school (depending on a particular schools curriculum).
Undergraduate Studies. To become a doctor, a student must first complete high school, then go on to college. During the typical four-year undergraduate period, the aspiring doctor will study topics such as anatomy, physiology, biology, chemistry and other college courses necessary for a degree, such as English or math.or the first two years of medical school, students spend their time in laboratories and classrooms, studying topics such as biochemistry, advanced anatomy and physiology, psychology, medical ethics and medico-legal topics. They also learn how to examine patients, take medical histories and diagnose illness.