When ice melts to water, what happens to the arrangement of particles?

The correct answer is Particles move freely and are far apart..

Method lens: First identify the measured quantity, then match the equation or particle idea to the command word. This question asks: When ice melts to water, what happens to the arrangement of particles. The correct response is Particles move freely and are far apart., because changes of state are explained by particle energy and arrangement. In Changes of state, the marking point should connect directly to explain that the material recovers its original properties if a change of state is reversed. 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 188 is distinct because it uses this exact question context and the method lens rather than a generic particle-model sentence.