Biodegradable Plastic Bag
| Latent heat is a science term used to describe the amount of energy that has been absorbed or released when a substance goes through the process of changing states. |
Latent Heat of Fusion
- heat absorbed by a unit mass of a solid at its melting point in order to convert the solid into a liquid at the same temperature
The heat absorbed as a substance changes phase from liquid to solid, a process called fusion or solidification. For water,
Latent Heat of Solidification
- heat liberated by a unit mass of liquid at its freezing point when it solidifies
Latent Heat of Vaporization
The heat absorbed when a substance changes phase from liquid to gas. For water,
Latent Heat of Condensation
The condensation is the opposite process of evaporation. Latent heat of condensation is energy released when water vapor condenses to form liquid droplets. The latent heat of condensation is defined as the heat released when one mole of the substance condenses. The temperature does not change during this process, so heat released goes directly into changing the state of the substance. It is expressed as kg/mol or kJ/kg. The energy released in this process is called heat of condensation. The heat of condensation of water is about 2,260 kJ/kg, which is equal to 40.8 kJ/mol. The heat of condensation is numerically exactly equal to the heat vaporization, but has the opposite sign. In the case of evaporation, the energy is absorbed by the substance, whereas in condensation heat is released.
Heat Capacity
The heat capacity C of a substance is the amount of heat required to change its temperature by one degree, and has units of energy per degree. The heat capacity is therefore an extensive variable since a large quantity of matter will have a proportionally large heat capacity. A more useful quantity is the specific heat (also called specific heat capacity), which is the amount of heat required to change the temperature of one unit of mass of a substance by one
Latent Heat of Fusion
- heat absorbed by a unit mass of a solid at its melting point in order to convert the solid into a liquid at the same temperature
The heat absorbed as a substance changes phase from liquid to solid, a process called fusion or solidification. For water,
Latent Heat of Solidification
- heat liberated by a unit mass of liquid at its freezing point when it solidifies
Latent Heat of Vaporization
The heat absorbed when a substance changes phase from liquid to gas. For water,
Latent Heat of Condensation
The condensation is the opposite process of evaporation. Latent heat of condensation is energy released when water vapor condenses to form liquid droplets. The latent heat of condensation is defined as the heat released when one mole of the substance condenses. The temperature does not change during this process, so heat released goes directly into changing the state of the substance. It is expressed as kg/mol or kJ/kg. The energy released in this process is called heat of condensation. The heat of condensation of water is about 2,260 kJ/kg, which is equal to 40.8 kJ/mol. The heat of condensation is numerically exactly equal to the heat vaporization, but has the opposite sign. In the case of evaporation, the energy is absorbed by the substance, whereas in condensation heat is released.
Heat Capacity
The heat capacity C of a substance is the amount of heat required to change its temperature by one degree, and has units of energy per degree. The heat capacity is therefore an extensive variable since a large quantity of matter will have a proportionally large heat capacity. A more useful quantity is the specific heat (also called specific heat capacity), which is the amount of heat required to change the temperature of one unit of mass of a substance by one