Specific Heat & Latent Heat
Temperature Change
Since temperature is a measure of a system's EInternal , a change in a system's temperature is an indication of a change in the system's EInternal.
A change in EInternal indicates that Energy has either left or entered the system, and this amount of energy that enters or leaves the system is called heat.
ΔEInternal = Heat = Q
Heat = (Specific Heat Capacity) · mass · ΔTemp
Q = c m ΔT
Phase Change
During a phase change (Solid ↔ Liquid or Liquid ↔ Gas) a system's EInternal changes but the system's temperature does NOT change.
Again a change in EInternal indicates that Energy has either left or entered the system, and this amount of energy that enters or leaves the system is called heat.
ΔEInternal = Heat = Q
Heat = (Latent Heat) · mass
Q = L m