1. The density of water is about 100 kg/m3 at room temperature.   True   False   2. An object floats in liquid L1, but it sinks to the bottom in liquid L2. Which statement of the following is true?   Liquid L1 has a higher density than liquid L2.   No definite conclusion can be made about the liquid densities.   Liquid L1 has a lower density than liquid L2.   Liquids L1 and L2 have the same density.   Hint Half-n-half Clue   3. The density of air is about 1 g/cm3 at room temperature and atmospheric pressure.   True   False   4. Which of the following statements is true?   Sea water may be more dense or less dense than fresh water.   Sea water is more dense than fresh water.   Sea water is less dense than fresh water.   Sea water has the same density as fresh water.   Half-n-half Clue   5. Water has the maximum density at   -4oC   40oC   4oC   0oC   Half-n-half Clue   6. A metal body of mass 108 g occupies a volume of 40 cm3. Identify the metal.   Lead with density = 11.4 g/cm3   Iron with density = 7.9 g/cm3   Aluminum with density = 2.7 g/cm3   Tungsten with density = 19.4 g/cm3   Half-n-half Clue   7. Which of these has the highest density?   Mercury   Lead   Water   Tungsten   Half-n-half Clue