Question

D D 8. (06.02 LC)
A heating curve has two flat lines, or plateaus. What does the plateau at the lower temperature represent? (5 poin
A. Boiling of a liquid
B. Melting of a solid
C. Increase in temperature of a substance
D. Decrease in temperature of a substance

Answer 1

Answer:

Boiling of a liquid

Answer 2

The plateau at the lower temperature represents option A. Boiling of a liquid.

Representation of the plateau at the lower temperature:

At the time when the heating curve should have two flat line or the plateaus so here the lower temperature shows the boiling of the liquid.

As the first plateau shows the melting and the second plateau shows the boiling.

hence, the option a is correct.

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