According to the kinetic molecular theory, what property do faster-moving molecules possess in greater amounts that causes them to move faster?

• A. Electronegativity
• B. Kinetic energy
• C. Potential energy
• D. Atomic radius

Answer: (B)

Verified step by step guidance

1. Recall that according to the kinetic molecular theory, the speed of molecules is related to their energy of motion.
2. Understand that faster-moving molecules have greater amounts of kinetic energy, which is the energy associated with motion.
3. Recognize that kinetic energy is given by the formula \(E_k = \frac{1}{2} m v^2\), where \(m\) is the mass of the molecule and \(v\) is its velocity.
4. Note that as the velocity \(v\) increases, the kinetic energy \(E_k\) increases quadratically, meaning faster molecules have significantly more kinetic energy.
5. Conclude that the property possessed in greater amounts by faster-moving molecules is kinetic energy, not electronegativity, potential energy, or atomic radius.