The statement "salt dissolves faster in hot water" means that the rate at which salt crystals break down and disperse into individual ions (sodium and chloride) is significantly higher in hot water compared to cold water.

Here's a breakdown of why this happens:

* Increased kinetic energy: Hot water molecules have more kinetic energy than cold water molecules. This means they are moving faster and colliding with the salt crystals more frequently and with more force.

* Weakening of intermolecular forces: The higher kinetic energy in hot water also weakens the intermolecular forces holding the salt crystals together. This makes it easier for the water molecules to break apart the crystal lattice and separate the ions.

* Increased solubility: The solubility of salt in water is higher at higher temperatures. This means that more salt can dissolve in a given amount of hot water compared to cold water.

In summary: The combination of increased kinetic energy, weakened intermolecular forces, and higher solubility leads to a faster dissolution rate of salt in hot water.