From Wikipedia, the free encyclopedia. The chemical compound silicon dioxide, also known as silica, is the oxide of silicon, chemical formula SiO2.It is found in nature in several forms, including quartz and opal. In fact, silica has 17 crystalline forms.he chemical compound silicon dioxide, also known as silica, is the oxide of silicon, chemical formula SiO2.
Windsor is home to 217,188 people, according to the 2016 census. Windsor's population has grown by three per cent in the past five years, but the city still fell behind the national growth rate, according to data collected during the 2016 census.
2006 Demographics. Data from Canada's 2006 Census, which took place on May 16, 2006, suggests that City of Windsor's population grew by 3.5 percent between 2001 and 2006, from 209,218 (adjusted due to boundary change on January 1, 2003) to 216,473.