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.
Worcester Woman, 113, Becomes Oldest Person In United States. WORCESTER (CBS) â The oldest living person in the United States is a Worcester resident. Clark University said Monday that alumna Goldie Michelson, who graduated in 1936, has become the oldest living person in America, and the oldest Jew in the world. Michelson is 113 years old and will turn 114 in August, according to Clark.