Lab to determine the density of water, measurements of mass and volume and calculations needed... Once determined, a series of objects were examined to determine if they will sink or float. The densities of each object were determined and recorded, then placed into water. If they sunk or floated was noted. The objects whose densities were less than the density of water (1g/ml) floated, while the others sank. We determined that an object will float if its density is less than that of water, and will not float if greater than the density of water.