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Study Guide: Accelerated Physical Science - Density Covers IPS book pages 53-64 (3.5-3.11) Lab review Density of a solid: determine mass of solid, volume of solid by either measuring dimensions or by displacement of water Density of a liquid: determine mass of liquid, volume of liquid. Density of a gas: determine mass by difference between mass of staring materials and mass of materials remaining after gas evolved. Determine volume from volume of water displaced by gas. Equations / Formulas Density = mass / volume Mass = density x volume Volume = mass / density Example of free response questions: What mass of solid copper (density 8.9 g/cm3) when added to a graduated cylinder containing 10.5 mL of water will result in a final volume of 13.4 mL? ESA answer to above problem: E: mass = den x vol S: mass = 8.9 g/cm3 x (13.4 mL – 10.5 mL) x (1 cm3 / mL) A: mass = 8.9 x 2.9 g = 25.81 g For sample density problems, see HDL problems in the IPS book and the density practice problems from the Chemistry book.