A liquid has a density of 1.2 g/cm³ and occupies a volume of 250 cm³. Calculate the mass of the liquid (Density of materials) (Density of materials; particle reasoning focus: Apply MS 1c and MS 3c skills when using standard form, significant figures and rearranging the density equation) (Density of materials; particle reasoning focus: Apply MS 1c and MS 3c skills when using standard form, significant figures and rearranging the density equation) (Density of materials; definition focus: Apply MS 1c and MS 3c skills when using standard form, significant figures and rearranging the density equation) ? P43-038 Density of materials checkpoint

300 g In P43-038, the answer must mention density and connect it to Density of materials.

Method lens: First identify the measured quantity, then match the equation or particle idea to the command word. This question asks: A liquid has a density of 1.2 g/cm³ and occupies a volume of 250 cm³. Calculate the mass of the liquid (Density of materials) (Density of materials; particle reasoning focus: Apply MS 1c and MS 3c skills when using standard form, significant figures and rearranging the density equation) (Density of materials; particle reasoning focus: Apply MS 1c and MS 3c skills when using standard form, significant figures and rearranging the density equation) (Density of materials; definition focus: Apply MS 1c and MS 3c skills when using standard form, significant figures and rearranging the density equation) ?. The correct response is 300 g In P43-038, the answer must mention density 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 apply MS 1c and MS 3c skills when using standard form, significant figures and rearranging the density equation. 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 104 is distinct because it uses this exact question context and the method lens rather than a generic particle-model sentence.