Study Guide: CP Chemistry, Sections 3

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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.