For Density of materials, which option correctly completes the ice mass rearrangement calculation in the objective: Rearrange the density equation to solve for mass, volume or density.?

The correct answer is The density 0.9 g/cm? multiplied by 100 cm? gives 90 g. (Density ice mass rearrangement)..

Boundary lens: Keep this separate from nearby specification points that use similar words but test a different idea. This question asks: For Density of materials, which option correctly completes the ice mass rearrangement calculation in the objective: Rearrange the density equation to solve for mass, volume or density. The correct response is The density 0.9 g/cm? multiplied by 100 cm? gives 90 g. (Density ice mass rearrangement)., 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 rearrange the density equation to solve for mass, volume or density. 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 46 is distinct because it uses this exact question context and the boundary lens rather than a generic particle-model sentence.