Explain why evaporation can occur at any temperature, not just at boiling point.

Evaporation can occur at any temperature because it depends on the kinetic energy of the surface particles. Even at lower temperatures, some particles have enough energy to break free from the liquid's surface, while others may not.

Particle lens: Describe arrangement, motion, spacing, collisions, or energy changes only when they are relevant here. This question asks: Explain why evaporation can occur at any temperature, not just at boiling point. The correct response is Evaporation can occur at any temperature because it depends on the kinetic energy of the surface particles. Even at lower temperatures, some particles have enough energy to break free from the liquid's surface, while others may not., because changes of state are explained by particle energy and arrangement. In Changes of state, the marking point should connect directly to explain evaporation as particles escaping from the surface of a liquid. If the question includes values, the working must keep the appropriate unit and operation; if it is an explanation, it must name the relevant particle behaviour or energy change. This item belongs to Changes of state and the particle model, so avoid answers that switch to a different quantity, confuse heat with temperature, or describe gas pressure without collisions when collisions are the reason. Checkpoint 144 is distinct because it uses this exact question context and the particle lens rather than a generic particle-model sentence.