Noun. 1. addition reaction-a chemical reaction in which one molecule is added to another. chemical reaction, reaction - (chemistry) a process in which one or more substances are changed into others; there was a chemical reaction of the lime with the ground water. 1  Facebook. 2  Twitter.
Kettlestone is a village and civil parish in the English county of Norfolk. It covers an area of 7.55 km2 (2.92 sq mi) and had a population of 177 in 85 households at the 2001 census, increasing to 197 at the 2011 Census. For the purposes of local government, it falls within the district of North Norfolk.
So, what is a Petoskey stone? It is a fossil colonial coral that lived in the warm Michigan seas during the Devonian time around 350 million years ago. The name Hexagonaria (meaning six sides) percarinata was designated by Dr. Edwin Stumm in 1969 because of his extensive knowledge of fossils.ctually, in this case, legend, geology, and history are intertwined to give the definition of what the Petoskey stone actually is. The study of the geology of the Petoskey stone also gives one quite an idea of how life was in Michigan during the Devonian time.