<transcript><audio_19>temperature so you're tracing temperature at one atmospheres this is going to be the heating curve for water</transcript><transcript><audio_20>that we've just done in the previous lecture outline and it will show that as temperature changes it takes energy to do it then there's a line where you have a phase transition no temperature change</transcript><transcript><audio_21>but it does take energy then a liquid phase then a phase transition that a gas phase the other thing that's interesting about this is that the slope of the</transcript><transcript><audio_22>is negative meaning that this line is negative slope as opposed to a positive slope water is almost the only substance we know that has a negative slope here</transcript><transcript><audio_23>what this means is that if you're at 273 degrees 273 Kelvin and you are in at a low pressure that if you increase pressure you will turn it from a solid</transcript><transcript><audio_24>to a liquid and in fact this is related to the fact that the solid phase of h2o is less dense than the liquid phase of</transcript> temperature so you're tracing temperature at one atmospheres this is going to be the heating curve for water that we've just done in the previous lecture outline and it will show that as temperature changes it takes energy to do it then there's a line where you have a phase transition no temperature change but it does take energy then a liquid phase then a phase transition that a gas phase the other thing that's interesting about this is that the slope of the is negative meaning that this line is negative slope as opposed to a positive slope water is almost the only substance we know that has a negative slope here what this means is that if you're at 273 degrees 273 Kelvin and you are in at a low pressure that if you increase pressure you will turn it from a solid to a liquid and in fact this is related to the fact that the solid phase of h2o is less dense than the liquid phase of
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