2013-2-27 Substance Behavior on Freezing P-v-T surface of a P-v-T surface of a substance that expands substance that on freezing(like water). contracts on freezing. Projections of the p-v-T Surface Projection of the p-v-T surface onto the pressure- specific volume plane results in a p-o diagram MPa (204 Specifie volum Isobars Projection of the p-v-T Liguid-vapoe surface onto the temperature-specific c212 volume plane results in a T-o diagram. 3-20 10 2013-2-27 10 P-v-T surface of a substance that contracts on freezing. Substance Behavior on Freezing P-v-T surface of a substance that expands on freezing (like water). 3-19 Projections of the p-v-T Surface ►Projection of the p-v-T surface onto the pressure￾specific volume plane results in a p-v diagram. ►Projection of the p-v-T surface onto the temperature-specific volume plane results in a T-v diagram. 3-20 Isotherms Isobars