give a reasonable explanation why segments 2 and 4 are not associated with temperature increases even though…
give a reasonable explanation why segments 2 and 4 are not associated with temperature increases even though heat is added a constant rate.\na the atoms in the molecules are rearranged with the absorbed heat energy.\nb the velocity of the molecules speed up.\nc the heat energy is used to break intramolecular bonds.\nd the heat energy is used to increase the distances between molecules.
Answer
Brief Explanations:
Segments 2 and 4 represent phase - change processes. During phase changes, heat energy is used to overcome the intermolecular forces and increase the distances between molecules rather than increasing the kinetic energy (and thus temperature) of the molecules. For example, segment 2 could be melting (solid - to - liquid) and segment 4 could be boiling (liquid - to - gas). When melting, heat breaks the intermolecular bonds holding the solid together and when boiling, heat overcomes the intermolecular forces in the liquid to turn it into a gas.
Answer:
D. The heat energy is used to increase the distances between molecules.