Which statement is true for a heating curve?

Question

A.
It shows how the pressure of a substance changes when heated.
B.
It shows how the temperature of a substance changes when heated.
C.
It shows how the volume of a substance changes when heated.
D.
It shows how the mass of a substance changes when heated.

Answer 1

The correct statement regarding a heating curve is:

B. It shows how the temperature of a substance changes when heated.

A heating curve graphically represents the relationship between temperature and the amount of heat added to a substance as it undergoes phase changes (e.g., melting and boiling) and temperature increases in different states (solid, liquid, gas).