Which of the following tends to be true of polymers but not small molecules?
I.Variable instead of constant composition
II.A poorly defined melting point
III.Solid state regions that are disordered

Question

Quizplus · Accepted Answer

Polymers tend to have variable composition because they are made up of repeating units that can differ in size, structure, and functionality. This is not typically the case with small molecules, which usually have a fixed and defined composition.

Polymers may have a poorly defined melting point because of their size and complexity. Instead of melting at a specific temperature, they may soften over a range of temperatures or exhibit a broad melting transition. Small molecules, on the other hand, generally have a well-defined melting point.

Polymers often have solid-state regions that are disordered, such as in amorphous or semi-crystalline polymers. This is due to the complex arrangement of polymer chains in the solid state, which can create regions of disorder or imperfections in the crystal structure. Small molecules, however, tend to form well-ordered crystals in the solid state.

Which of the Following Tends to Be True of Polymers