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A substance’s heating curve is shown in the graph. Â What is its melting point?
Is this exothermic or endothermic?
Match the letter points for what is occurring at each part of the phase change diagram below.
A and B |
C and D |
D and E |
E and F |
B and C |
Between which points is the substance changing state?
Between which points is the temperature of the substance remaining constant?
In which segment is the kinetic energy remaining constant?
Between which points is the substance changing its state of matter?
As time and temperature increases in the following graph, the potential energy            while the kinetic energy             .
How many states of matter are present during line segment AB?
How many states of matter are present during line segment BC?
What state(s) of matter are present at D-E?
True or false: melting and freezing occur at the same temperature.
Which of these conditions is always true for an exothermic process?
Looking at the heating curve above, What is occurring at letter B?
How many states of matter are present during line segment DE?
What phase change occurs at D-E?
What type of graph is shown in the picture?
Which of these conditions is always true for an endothermic process?
A substance’s heating curve is shown in the graph. Â What is its boiling point?
Is this exothermic or endothermic?
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