As a substance is subjected to pressure and/or temperature changes, it may undergo condensation, deposition, freezing, melting, sublimation, or…

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8. As a substance is subjected to pressure and/or temperature changes, it may undergo condensation, deposition, freezing, melting, sublimation, or vaporization. (a) Consider the phase diagra m shown below and state the changes that take place upon going from points A to B to C to D.

(b) Is the transition from A to B exothermic or endothermic?

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