Test Bank Principles of Chemistry A Molecular Approach 3rd Edition by Tro Nivaldo A+
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Global: G4
LO: 1.8b
67) Describe the difference between an intensive and extensive property using examples.
Answer: An intensive property does not depend on the amount of the substance present, such as temperature or density. An extensive property is one that does depend on the amount of the substance, such as mass or volume.
Diff: 1 Var: 1 Page Ref: 1.6
Global: G1, G8
68) What happens to the density of a sample of iron metal as it is heated from room temperature to 100°C? (This is below the melting point of iron.)
Answer: Since the mass of the iron stays constant, but the volume increases as the temperature is raised, the density of the iron decreases upon heating.
Diff: 1 Var: 1 Page Ref: 1.6
Global: G1, G8
69) Define precision.