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 lower density than liquid L2.   Liquid L1 has a higher density than liquid L2.   No definite conclusion can be made about the liquid densities.   Liquids L1 and L2 have the same density.   Hint Half-n-half Clue   3. Which of the following statements is true?   Water floats on oil because water is more dense than oil.   Oil floats on water because oil is more dense than water.   Oil floats on water because oil is less dense than water.   Water floats on oil because water is less dense than oil.   Half-n-half Clue   4. Which of these has the lowest density?   Glass   Cork   Water   Aluminum   Half-n-half Clue   5. A metal body of mass 38.8 g occupies a volume of 2 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 SI unit of density is   cm3/g   g/cm3   kg/m3   m3/kg   Half-n-half Clue   7. The density of oxygen at room temperature is about 1.3 kg/m3. Therefore, its density in g/cm3 is   0.013   130   0.0013   1300   Half-n-half Clue