1. The density of air is about 1 g/cm3 at room temperature and atmospheric pressure.   True   False   2. The SI unit of density is   kg/m3   m3/kg   g/cm3   cm3/g   Hint Half-n-half Clue   3. Which of the following statements is true?   Sea water has the same density as fresh water.   Sea water is more dense than fresh water.   Sea water is less dense than fresh water.   Sea water may be more dense or less dense than fresh water.   Half-n-half Clue   4. The density of water at room temperature is about   0.1 g/cm3   0.01 g/cm3   10 g/cm3   1 g/cm3   Half-n-half Clue   5. A metal body of mass 97.0 g occupies a volume of 5 cm3. Identify the metal.   Tungsten with density = 19.4 g/cm3   Lead with density = 11.4 g/cm3   Aluminum with density = 2.7 g/cm3   Iron with density = 7.9 g/cm3   Half-n-half Clue   6. The fraction of an iceberg submerged below the water surface is   9 / 10   1 / 5   1 / 10   4 / 5   Half-n-half Clue   7. One kg of air is compressed from 1 m3 to 0.5 m3. Which of the following statements is true?   The density is doubled.   The mass is halved.   The mass is doubled.   The density is halved.   Half-n-half Clue