explain what happens in the fridge before opening it and after opening it in terms of phases of matter
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Answer:
Refrigeration has allowed for great advances in our ability to store food and other substances safely for long periods of time. The same technology used to run refrigerators is also used in air conditioners. How does this technology work to produce cool air when the external conditions are hot? As we shall see, refrigerators (and air conditioners) rely on the thermodynamic application known as the heat engine, as well as the molecular properties of the substance contained in the coils of the refrigerator.
Matter mainly exists in three different phases (physical states): solid, liquid, and gas. A phase is a form of matter that is uniform in chemical composition and physical properties. As shown in Figure 3, a substance in the solid phase has a definite shape and volume; a substance in the liquid phase has no definite shape, but has a definite volume; a substance in the gas phase has no definite shape or volume, but has a shape and volume determined by the shape and size of the container.
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