The melting point of a substance is the temperature at which a substance changes from a solid to a liquid. The temperature at which a substance melts is determined by the strength of the electrostatic forces of attraction (intermolecular forces) between the molecules of the substance. The higher the melting point, the stronger the electrostatic forces of attraction. The lower the melting point, the weaker the electrostatic forces of attraction. Look at the melting points of the 3 substances below:

Question

The melting point of a substance is the temperature at which a substance changes from a solid to a liquid. The temperature at which a substance melts is determined by the strength of the electrostatic forces of attraction (intermolecular forces) between the molecules of the substance. The higher the melting point, the stronger the electrostatic forces of attraction. The lower the melting point, the weaker the electrostatic forces of attraction. Look at the melting points of the 3 substances below:

Answer 1

1. Substance A: Melting Point = 300°C

2. Substance B: Melting Point = 2000°C
3. Substance C: Melting Point = -50°C

From the given information, we can conclude that Substance B has the highest melting point (2000°C) among the three substances. This indicates that Substance B has the strongest electrostatic forces of attraction between its molecules.

Substance A has a melting point of 300°C, which is lower than Substance B but higher than Substance C. This suggests that Substance A has intermediate strength of electrostatic forces of attraction compared to the other two substances.

Substance C has the lowest melting point (-50°C) among the three substances, indicating that it has the weakest electrostatic forces of attraction between its molecules.