Question

Which statement about the temperatures of phase changes and electrostatic forces holding the molecules is correct?(1 point)

The strength of the forces between molecules in a substance is strongest at higher temperatures

The temperatures at which a substance changes phases indicate the relative strength of the forces between molecules in the substance.

The temperatures at which a substance changes phases is dependent of the size of the molecules in the substance.

The strength of the forces between molecules in a substance depends on the number of filled electron shells

Answer 1

"The temperatures at which a substance changes phases indicate the relative strength of the forces between molecules in the substance." is correct.

Explanation: Higher melting/boiling points mean more thermal energy is required to overcome the intermolecular forces, so those forces are stronger. (Molecular size and polarizability can influence those temperatures, but the phase-change temperatures themselves are the indicator of intermolecular strength.)