Thermodynamics: Heat and Temperature Conversion

4200 Jkg -1oC-1 and 840 Jkg -1oC-1

The amount of heat energy can be calculated using the formula Q = mcΔT, where Q is the heat energy, m is the mass of the substance, c is the specific heat capacity, and ΔT is the change in temperature.

Liquid

<p>The total energy required can be calculated from the graph of temperature versus energy, by finding the area under the curve during the phase change from solid to liquid.</p> Signup and view all the answers

<p>The power of the heater can be calculated using the formula P = Q / t, where P is the power, Q is the heat energy, and t is the time.</p> Signup and view all the answers

<p>572°F</p> Signup and view all the answers

<p>Energy that is transferred from one body to another because of a difference in temperature</p> Signup and view all the answers

<p>Joule (J)</p> Signup and view all the answers

<p>Thermal equilibrium</p> Signup and view all the answers

<p>C = Q / Δθ</p> Signup and view all the answers

<p>The quantity of substance in the object</p> Signup and view all the answers

<p>Temperature is a measure of the degree of hotness or coldness of a system. When an object is heated, it absorbs heat energy and its temperature increases. Conversely, when an object is cooled, it releases heat energy and its temperature decreases.</p> Signup and view all the answers

<p>Heat capacity is the amount of heat energy required to change the temperature of an object by 1°C, while specific heat capacity is the amount of heat energy required to change the temperature of 1 gram of a substance by 1°C.</p> Signup and view all the answers

<p>Calorimetry is based on the principle of heat transfer from a system at a higher temperature to one at a lower temperature. It is used to measure heat transfer by measuring the temperature change of a calibrated object.</p> Signup and view all the answers

<p>Latent heat of fusion is the energy required to change 1 gram of a substance from solid to liquid at its melting point, while latent heat of vaporization is the energy required to change 1 gram of a substance from liquid to gas at its boiling point.</p> Signup and view all the answers

<p>During a phase transition, the temperature of a system remains constant, as the heat energy is used to change the phase of the substance. The graph of temperature versus time shows a plateau during the phase transition, indicating no change in temperature.</p> Signup and view all the answers

<p>The graph of temperature versus energy shows the relationship between the internal energy of a system and its temperature. It illustrates the conservation of energy, as the total energy of an isolated system remains constant, but can be converted from one form to another.</p> Signup and view all the answers