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).
Best Answer: Becoming a doctor requires more training than most other jobs. It usually takes at least 11 years to become a doctor: 4 years of college, 4 years of medical school, and 3 years working in a hospital.For some specialties, doctors may have to work in a hospital for up to 8 years before they are trained.To become a doctor, you should study biology, chemistry, physics, math, and English. It is not easy to get into medical school. You have to do very well in college and on medical school entrance tests.Students spend most of the first 2 years of medical school in labs and classrooms. They take lots of science courses.o become a doctor, you should study biology, chemistry, physics, math, and English. It is not easy to get into medical school. You have to do very well in college and on medical school entrance tests. Students spend most of the first 2 years of medical school in labs and classrooms. They take lots of science courses.