Question

A. Segment in which a liquid is turning into a gas. b. Segment in which a solid is being warmed. C. Segment in which a solid is changing into a liquid. d. Segment(s) in which there is no temperature change. Segment in which the vapor is being warmed. e. f. Segment in which the molecules have the highest kinetic energy. Segment(s) in which a phase change is occurring. g.

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Answer 1

a. Segment CD is where the liquid is turning into a gas (vaporization).

b. Segment AB is where the solid is being warmed.

c. Segment BC is where the solid is changing into a liquid (melting).

d. Segments AB and CD have no temperature change, as the substance is absorbing heat to undergo a phase change.

e. Segment DE is where the vapor is being warmed (heating).

f. The plateau at segment CD represents the point where the molecules have the highest kinetic energy, as they are in the gas phase and moving freely.

g. Segments BC and CD are where phase changes are occurring (melting and vaporization, respectively).