What is the density of an object that has a mass of 200 grams and a volume of 50 cm³ (Density of materials) ? P43-001 Density of materials checkpoint

The density of the object is 4 g/cm³. In P43-001, the answer must mention volume, regular solid and connect it to Density of materials.

Particle lens: Describe arrangement, motion, spacing, collisions, or energy changes only when they are relevant here. This question asks: What is the density of an object that has a mass of 200 grams and a volume of 50 cm³ (Density of materials) ?. The correct response is The density of the object is 4 g/cm³. In P43-001, the answer must mention volume, regular solid and connect it to Density of materials., because density links mass and volume, so the answer must preserve which quantity is being calculated. In Density of materials, the marking point should connect directly to describe how to determine the volume of a regular solid using length measurements. 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 72 is distinct because it uses this exact question context and the particle lens rather than a generic particle-model sentence.