* Increased Kinetic Energy: Heat energy is absorbed by the liquid molecules, causing them to vibrate and move around more vigorously. This increased movement is called kinetic energy.
* Weaker Intermolecular Forces: The molecules in a liquid are held together by attractive forces called intermolecular forces. As the molecules move faster, these forces weaken.
* Increased Distance: The weaker forces allow the molecules to move further apart, leading to an increase in the volume of the liquid.
* Phase Change: If you continue to heat the liquid, the molecules eventually gain enough kinetic energy to overcome the intermolecular forces entirely. This causes the liquid to change state to a gas (evaporation or boiling).
In summary: Heating a liquid increases the kinetic energy of its molecules, causing them to move faster and farther apart. This leads to expansion of the liquid, and if enough heat is added, the liquid can eventually boil and become a gas.
