Chapter 4 HEAT4.3 Specifc Latent HeatLearning outcomesstate that transfer of heat during a change of phase does not cause a change in temperature. defne specifc latent heat (l)state thatdetermine the specifc latent heat of fusiondetermine the specifc latent heat of vaporisation.solve problems involving specifc latent heat4.3 Specifc Latent HeatmQl =http!!""".#outube.com!"atch$v%h&mC'()e*+g 4.3 Specifc Latent HeatChange of state of matters4.3 Specifc Latent HeatChange of state of matters4.2 Specifc Latent HeatAdd energ# to a solid, it melts and changes into a li-uid. Add energ# to a li-uid, it evaporates and changes into a gas.Change of state of matters4.2 Specifc Latent Heat.emove energ# from a gas, it condenses and changes into a li-uid. .emove energ# from a li-uid, it free/es and changes into a solid.Latent heatthe energ# given out or absorbed b# a substance "hen it changes state, without change in temperature.4.3 Specifc Latent Heathttp!!""".#outube.com!"atch$v%12uHu34mo"" 4.3 Specifc Latent HeatTwo types of latent heatLatent heat of fusion (from solid to liquid)Latent heat of vapori/ation (from liquid to gas)4.3 Specifc Latent Heat5uring melting, the heat absorbed to weaken the bonds bet"een the particles.4.3 Specifc Latent HeatLatent Heat of FusionThe particles are freed from their f6ed positions and are able to vibrate and move among each other. 4.3 Specifc Latent HeatLatent Heat of FusionThe amount of heat absorbed is called 7latent heat of fusion84.3 Specifc Latent HeatLatent Heat of Fusion(hen a li-uid boils, the heat absorbed is used to completely break the bonds between the particles. 4.3 Specifc Latent HeatLatent Heat of Vaporization9articles are free to move.4.3 Specifc Latent HeatLatent Heat of :apori/ationThe amount of heat absorbed is called 7latent heat of vaporization8.4.3 Specifc Latent HeatLatent Heat of Vaporization4.3 Specifc Latent Heat4 main changes of phase;elting, boiling, condensation and solidifcationLatent Heat AbsorbLatent Heat Absorb4.3 Specifc Latent Heat4 main changes of phase;elting, boiling, condensation and solidifcationLatent Heat .eleaseLatent Heat .elease4.2 Specifc Latent HeatTheSP!"#"! L$%&% H$% '# #(S"'&of a solid substance is the heat re-uired to change 4 2g of it from solid to li-uid "ithout an# temperature change.(E< ?>T CHA?&E even though heat is beingabsorbed by the solid particles. (h#$This is because the heat absorbed does not increase the 2inetic energ# of particles but is used to >:E.C>;E THE +>.CE >+ ATT.ACT@>? bet"een the particles.4.2 Specifc Latent HeatTheSP!"#"! L$%&% H$% '# )$P'*"+$%"'&of a li-uid substance is the heat re-uired to change 4 2g of it from li-uid to vapor "ithout an# temperature change.(Li-uid to &as)4.3 Specifc Latent Heat(ithout an# temperature change===The temperature 5>E< ?>T CHA?&E even though heat is beingabsorbed by the solid particles. (h#$This is because the heat absorbed does not increase the 2inetic energ# of particles but is used to >:E.C>;E THE +>.CE >+ ATT.ACT@>? bet"een the particles.4.2 Specifc Latent Heat