If an object has a mass of 200 grams and a volume of 50 cm³, what is its density (Density of materials) ? P43-008 Density of materials checkpoint

The correct answer is 4 g/cm³ ? P43-008 density measurement and calculation.

Definition lens: Give the precise definition, then add a context sentence that shows how it is used. This question asks: If an object has a mass of 200 grams and a volume of 50 cm³, what is its density (Density of materials) ?. The correct response is 4 g/cm³ ? P43-008 density measurement and calculation, 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 identify density in kilograms per metre cubed or grams per centimetre cubed, mass in kilograms or grams and volume in metres cubed or centimetres cubed. 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 18 is distinct because it uses this exact question context and the definition lens rather than a generic particle-model sentence.