Required practical activity 5: use appropriate apparatus to determine densities of irregular solid objects.

Required practical activity 5: use appropriate apparatus to determine densities of irregular solid objects. Cause lens: Name the cause, then state the effect on particles, pressure, density, or energy. In Density of materials, this means the particle model explains the observable property using particles. The answer should use the approved wording from Changes of state and the particle model, include regular solid, irregular solid, and avoid drifting into another section of Particle model of matter. For revision, practise saying the exact objective aloud, then add the one calculation, particle movement, collision, graph, or practical detail that makes the statement true. A strong exam response for checkpoint 9 is specific to required practical activity 5: use appropriate apparatus to determine densities of irregular solid objects and does not reuse a generic explanation from a neighbouring objective.