Endo, Exo, and Phase diagrams

Think way backEndo, Exo, and Phase diagramsRemember this image???

Endo vs. ExothermicEndothermica reaction that requires energy to proceeds forward.In endothermic reactions you begin in a low energy phase (solid or liquid) and change to a higher energy phase (liquid or gas).Exothermica reaction that releases energy when is proceeds forward.In exothermic reactions you begin in a high energy phase (gas or liquid) and change to a lower energy phase (liquid or solid).Lets take another look at that last image.Note the colors

Endo or exothermic???I will use Excel to randomly pick a phase change.You will tell me if the change is endothermic or exothermic.Use your clickers to respond

B= EndothermicA= ExothermicPhase Diagrams

Which of the following transitions represents an increase in temperature while the pressure remains the same?1) A B3) FB2) C B4) BA

Which of the following transitions represents an increase in pressure while the temperature remains the same?1) A B3) FB2) C B4) BA

Which of the following transitions would result in MELTING?1) A B3) FB2) C A4) BA

Which of the following transitions would result in BOILING?1) A B3) FB2) C D4) DE

Which of the following transitions would result in CONDENSATION?1) A B3) FB2) C D4) DE

Which of the following transitions would result in SUBLIMATION?1) A B3) CE2) C D4) ED

Which of the following transitions would result in MELTING followed by BOILING?1) A B3) CE2) C D4) CF

Which of the following transitions would NOT result in MELTING?1) A B3) AD2) C B4) DB

Which of the following transitions would result in a phase change?1) A B3) BD2) C A4) EF