Hydrofluoric acid (HF) is a solution of hydrogen fluoride in water. Its chemical formula is HF. It is a weak acid, but very corrosive and extremely toxic. It can dissolve glass to make hexafluorosilicic acid.
The produce, the products, and the exhibits by organizations such as the Burlington County Historical Society all looked worthy on Wednesday. But to me, the farm fair is about the animals - and the kids who labor over and love them. I could see the devotion on the faces of Mansfield Township neighbors and pals Nick Kester and A.J. Brooks, who are both 12 and raise a type of sheep called a Lincoln. They'll show their animals in a wool competition Thursday.
A state fair is an annual competitive and recreational gathering of a U.S. state's population, usually held in late summer or early fall. It is a larger version of a county fair, often including only exhibits or competitors that have won in their categories at the more-local county fairs. State fairs began in the nineteenth century for the purpose of promoting state agriculture, through competitive exhibitions of livestock and display of farm products.