Latent Heat & Phase Changes definitions Flashcards
Latent Heat & Phase Changes definitions
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Specific Heat
The amount of heat required to change the temperature of a unit mass of a substance by one degree Celsius. Latent Heat
The heat absorbed or released during a phase change of a substance, without changing its temperature. Phase Change
The transition of a substance from one state of matter to another, such as solid to liquid or liquid to gas. Solid
A state of matter characterized by structural rigidity and resistance to changes in shape or volume. Liquid
A state of matter with a definite volume but no fixed shape, adapting to the shape of its container. Gas
A state of matter without a definite shape or volume, expanding to fill any container. Melting Point
The temperature at which a solid becomes a liquid at atmospheric pressure. Boiling Point
The temperature at which a liquid turns into vapor at atmospheric pressure. Latent Heat of Fusion
The heat required to change a unit mass of a solid into a liquid without a temperature change. Latent Heat of Vaporization
The heat required to change a unit mass of a liquid into a gas without a temperature change. Heat of Transformation
Another term for latent heat, referring to the energy involved in changing the phase of a substance. T vs Q Graph
A plot of temperature versus heat added, used to visualize phase changes and temperature changes. Q = mcΔT
The equation used to calculate heat transfer during a temperature change within a single phase. Q = mL
The equation used to calculate heat transfer during a phase change, where L is the latent heat. Chemical Bonds
The connections between atoms in a molecule, which can be broken during phase changes.
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