Question 12

Gas exhibits the most molecular motion.

In terms of molecular motion, gases demonstrate the highest levels of activity compared to solids and liquids. This is due to the greater distances between molecules in gases, allowing them to move freely and collide with one another.

A) Solid

Solids have the least molecular motion among the three states of matter. The molecules in a solid are closely packed together and primarily vibrate in place, which restricts their ability to move freely.

B) Liquid

Liquids exhibit more molecular motion than solids but less than gases. While the molecules in a liquid can slide past one another, they are still closely packed, which limits their overall motion compared to gas molecules.

C) Gas

Gases have the most molecular motion of all states of matter. The molecules are far apart and move rapidly in all directions, allowing for significant freedom of movement and higher kinetic energy.

D) None of the above

This option is incorrect as it implies that there is no state of matter exhibiting significant molecular motion. In reality, gases clearly show the most molecular motion compared to solids and liquids.

Conclusion

Gas is definitively the correct answer as it embodies the highest degree of molecular motion, far exceeding that of solids and liquids. All other options fail to account for the extensive kinetic activity present in gases, highlighting their unique behavior in relation to molecular motion.