Question

the particles in water have less mobility than the particles in oxygen. which statement best explains this observation?
water is always colder than oxygen.
water has a lower density than oxygen.
water particles have a greater kinetic energy.
water particles have strong intermolecular forces.

Explanation:

• Option A: Temperature of water vs oxygen isn't fixed by state (water can be hot, oxygen cold), so incorrect.
• Option B: Density relates to mass/volume, not particle mobility (mobility is about movement, density about mass distribution), so incorrect.
• Option C: Higher kinetic energy means more mobility. Water particles have less mobility, so they should have less kinetic energy, not greater. Incorrect.
• Option D: Stronger intermolecular forces restrict particle movement. Water (liquid) has stronger intermolecular forces than oxygen (gas, weak forces), so water particles move less. Correct.

Answer:

D. Water particles have strong intermolecular forces