Chemistry+behind+my+experiment

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Phase transition (sublimation reaction) Phase transition is a change of a substance from one state to another. There are many specific names for the different phase transitions occurring between solid, liquid, gas and in rare cases plasma. These transitions are shown in this diagram shown below.======

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Classifying Phase changes was first attempted by Paul Ehrenfest. But in the Ehrenfest classification scheme there was a flaw which is that it didn't take into account that there would be a case in which a derivative of free energy diverges. So the next Phase classification scheme is the modern classification. The modern classification system was split into two groups which is the first order phase transition are ones that involve latent and the second order phase transition are the ones that involve continuous phase transitions which is called second order phase transition.======

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My experiment goes through a phase transition when dry ice meet warm water, the dry ice starts to develop into gas in the water because of the temperature change. This phase transition from solid to gas is sublimation. This sublimation change doesn't have to go through liquid to become gas. Sublimation is an endothermic transition that occurs at temperatures and pressures below the substances triple point in its own phase change. Sublimation change occurs at an atmospheric temperature of -78.5 °C /−109.3 °F. My experiment starts when I drop dry ice in warm water which make carbon dioxide gas after that I take a cloth soaked with soapy solution and slide it across the top of the bowl which makes a protected layer on top of the bowl which traps the carbon dioxide gas making a bubble.======