Calcium oxide15 is known as lime1116 and is one of the top 10 chemicals1217 produced annually by thermal decomposition of limestone. The thermal decomposition of calcium carbonate to lime18 is one of the oldest chemical reactions known. For several thousand years, lime has been used in mortar (a paste of lime, sand and water) to cement stones to one another in buildings, walls and roads. The setting of mortar involves several chemical reactions.
World Synagogues: Table of Contents | Australia | Canada. Click Left/Right to Scroll, Click the Caption to View the Individual Image. Ahavath Beth Israel Synagogue in Boise, Idaho. This is the oldest Synagogue building still in use West of the Mississippi River. Touro Synagogue - Newport, Rhode Island. Kahal Kadosh Beth Elohim Synagogue - Charleston, SC.
May 17, 2016. Massachusetts is full of history, and now the Bay State can lay claim to another time-honored title: the oldest living person in the United States. Goldie Michelson, who graduated from Clark University in Worcester in 1936, is officially the oldest person in the U.S. and the oldest Jewish person in the world, according to Clark. Sheâs currently 113 and will turn 114 in August. Michelson still lives in Worcester and spoke to her alma mater in 2012 when she was 110.