Question

Dale makes a model of part of an elemental solid by attaching balls to each other with rods. His model looks something like the following image:

How could Dale improve his mode

 A. 

by using springs instead of rods to allow the model atoms to vibrate in their positions

 B. 

by using strings instead of rods to allow the model atoms to move more freely

 C. 

by using different sizes of balls to represent different kinds of atoms

 D. 

by using cotton balls instead of hard balls to allow the model atoms to change size

​

Answer 1

by using springs instead of rods to allow the model atoms to vibrate in their positions

Explanation:i got it correct

Answer 2

Answer: Option A

Step-by-step explanation:

The strong inter molecular forces that is found in solids does not allows the atoms to move out of the solid but it allows them to vibrate on its position.

The atoms in the solid are joined together by strong inter molecular forces that does not allows the atoms to move out of the bond but due to kinetic energy the atoms keeps them vibrating even if they remain in their position.

Hence, the correct answer is option A because the model must have been substituted with a spring inspite of rods.