A doubled Styrofoam cup fitted with a cover in which a hole is bored to accommodate a thermometer can serve well as a calorimeter (See Figure 7.1.) A calorimeter is a device used to determine heat flow during a chemical or physical change. In the laboratory, heat flow is measured in an apparatus called a calorimeter. If heat is absorbed or enters the system, the process is endothermic and if heat is evolved or exits the system, the process is exothermic. Heat energy is either absorbed or evolved during nearly all chemical and physical changes. When equal masses of objects are heated to absorb an equal amount of heat, the object with smaller the specific heat value would cause the greatest increase in temperature.
0 Comments
Leave a Reply. |