Final answer:
As gases condense into liquids, the particles release energy in the form of heat, which is part of the condensation process where gas molecules come closer together.
Step-by-step explanation:
As gases condense to form liquids, the particles release energy. This energy release occurs because the molecules in a gas have a lot of kinetic energy due to their rapid movement and relative distance from each other. When a gas condenses into a liquid, the molecules are brought closer together, which results in the formation of intermolecular forces and the subsequent release of energy. This energy release is essential for the gas-to-liquid transition, often seen as heat being given off during the process of condensation. The energy that is released during condensation is the same which would need to be absorbed for evaporation to occur, as in the case where liquid water becomes water vapor.