A metal cube has a density of 8 g/cm³ and a volume of 50 cm³. What is its mass (Density of materials) ? P43-026 Density of materials checkpoint

The correct answer is 400 g ? P43-026 density measurement and calculation.

Unit lens: Check the units before giving the final statement so the physics quantity is not swapped. This question asks: A metal cube has a density of 8 g/cm³ and a volume of 50 cm³. What is its mass (Density of materials) ?. The correct response is 400 g ? P43-026 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 calculate volume when mass and density are known. 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 37 is distinct because it uses this exact question context and the unit lens rather than a generic particle-model sentence.