GGR214H5 Lecture Notes - Lecture 5: Sensible Heat, Heat Transfer, Heat Capacity
Document Summary
Sensible heat: heat transfer that leads to temperature change, object will feel warmer or colder, not all substances will warm by the same amount as a result of an equal amount of heating. Q = mc t: q is heat flow in joules, m is mass in kilograms, t is temperature change in degrees kelvin, and c is the specific heat. Latent heat: heat absorbed or released by a change in phase, energy is transferred, but there is no change in temperature, hidden, or latent, melting, evaporation, sublimation, absorb latent heat, freezing, condensation, deposition, release latent heat. Change of state: how much energy is needed to melt 1 kg of ice, lf * amount to melt. = 0. 334 mj (or 334000 j or 3. 34 x 105 j) Context: 1 j ~ the energy to lift an apple 1m: energy is released in freezing, energy is required for melting, energy is released in condensation, energy is required for evaporation.
