Which of the following units is used to express density ? P43-024 Density of materials checkpoint

The correct answer is Both kg/m³ and g/cm³ ? P43-024 density measurement and calculation.

Cause lens: Name the cause, then state the effect on particles, pressure, density, or energy. This question asks: Which of the following units is used to express density ?. The correct response is Both kg/m³ and g/cm³ ? P43-024 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 define density as mass per unit volume. 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 4 is distinct because it uses this exact question context and the cause lens rather than a generic particle-model sentence.