What is the formula for calculating density, and what units are used for density, mass, and volume?

The formula for calculating density is density = mass / volume. Density is measured in kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³), mass is measured in kilograms (kg) or grams (g), and volume is measured in cubic meters (m³) or cubic centimeters (cm³).

Method lens: First identify the measured quantity, then match the equation or particle idea to the command word. This question asks: What is the formula for calculating density, and what units are used for density, mass, and volume. The correct response is The formula for calculating density is density = mass / volume. Density is measured in kilograms per cubic meter (kg/m³) or grams per cubic centimeter (g/cm³), mass is measured in kilograms (kg) or grams (g), and volume is measured in cubic meters (m³) or cubic centimeters (cm³)., 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 recall and apply the equation density = mass divided by 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 8 is distinct because it uses this exact question context and the method lens rather than a generic particle-model sentence.