Finding a Material's Specific Heat Capacity

Determining the specific heat capacity of a material Purpose: To determine exactly the specific heat capacity of materials of a given mass and other laboratory equipment. The specific heat capacity of a material is the amount of heat needed to raise a kilogram of material by 1 Kelvin or 1 ° C. It is usually measured in J kg -1 K -1. Analyze the experiment method and results. The goal is to derive the reason why certain materials have higher or lower specific heat capacity than other materials and to scientifically discuss these reasons.

The specific heat capacity is that the number of joule in the material or material changes without the material changing its state. This is closely related to heat capacity. Heat capacity is how much heat can be stored in the material. Heat capacity is expressed as follows. Heat capacity = mass X specific capacity All materials have a useful life and must be replaced eventually. There is a form of degradation that can accelerate the process or potentially influence the material. They are the role of water in corrosion, electrolysis, fungal attack, insect attack, frost attack, chemical and sulfate attack, weathering, ultraviolet attack, stress fatigue, and failure mechanism.

The heat required to raise the temperature of 1 kg of material by 1 ° C is called the specific heat capacity or specific heat, usually indicated by c. Therefore, by definition, the specific heat of water is: c = 1 kcal / kg · ° C. The specific heat differs (see Appendix A, Table A4), and also depends on the temperature. For example, between 0 ° C and 100 ° C, the specific heat of water changes by about 1% and the minimum temperature reaches 35 ° C. With this change, you need to consider the exact definition of calories. Calorie is the amount of calorie needed to raise the temperature of 1 gram of water from 14.5 ° C to 15.5 ° C. Finally, the specific heat depends on the pressure received by the material during heating.

It is called the heat of the object. Specific heat does not depend on the size and shape of the object, it depends only on the material making up the object. The specific heat of water is 1 calorie per gram of Celsius or 4,186 Joules per kilogram of Celsius. When it freezes, the amount of water increases and ice floats. This is related to the change in specific heat of water at around 0 ° C. Table 1 shows the specific heat of general materials. A system is a state of a system that can be changed. The change from solid to liquid or from liquid to gas or vice versa is called phase change. Even if the temperature of the material subject to phase change remains constant, they always accompany the transfer of heat.