This is a representation of a plastic bag being stretched.Which statement best describes what is happening in the figure?
A)Molecular chains shift from a random orientation to align parallel to each other in the direction of the pulling force.
B)During the pulling,the mixed-up polymer chains cross link to make the polymer stronger.
C)The pulling force creates branches,causing a switch from high density to low density polymer.
D)It is only a temporary distortion;once the pulling force stops,the plastic snaps back to the original orientation.

Question

This is a representation of a plastic bag being stretched.Which statement best describes what is happening in the figure? 
A)Molecular chains shift from a random orientation to align parallel to each other in the direction of the pulling force. 
B)During the pulling,the mixed-up polymer chains cross link to make the polymer stronger. 
C)The pulling force creates branches,causing a switch from high density to low density polymer. 
D)It is only a temporary distortion;once the pulling force stops,the plastic snaps back to the original orientation.

Quizplus · Accepted Answer

Think about how a plastic bag behaves when you stretch it.It is almost like you can see the polymer chains in the larger structure.

This Is a Representation of a Plastic Bag Being Stretched