I am trying to achieve an understanding of this occurances to be able to recognize them myself. Thanks. Terry Holbrook. When trying to classify a process as exothermic or endothermic, watch how the temperature of the surroundings changes. An exothermic process releases heat, and causes the temperature of the immediate surroundings to rise. An endothermic process absorbs heat and cools the surroundings.
Confidence votes 317. The purpose of measurement is to be able to have a group of units that everyone can use as a rule of thumb when trying to describe something's height, weight or volume.
Performing a measurement means comparing an unknown physical (or chemical) quantity with a quantity of the same type taken as reference using an instrument. A measurement necessarily involves a reference frame and therefore units. In the not so distant past, there were numerous units, which had little in common with each other. The first coherent system of units only appeared with the French revolution: the metric system.