ACTIVITY 2: Ranking the Densities Density is a physical property of matter that can be used to identify substances according to mass and volume. A unique characteristic of a substance is its given density. That is, all substances have their own density. Water has a density of 1.0 g/mL. If there is a density greater than this value, it will sink in the water. Density that is less than 1.0 g/ml will float. This idea of sinking and floating demonstrates the relationship between buoyancy and density. In this Lab, you will determine the buoyancy of different liquids through their respective densities. MATERIAL . graduated cylinder . distilled water . vinegar (25 mL or 50 mL) com syrup . dish soap . mass balance (digital or rubbing alcohol . baby oil triple beam) PROBLEM QUESTION 1) Read through the procedures, and come up with a question that the lab is trying to answer. HYPOTHESIS 2) Come up with a hypothesis to answer your problem question. This can be an educated guess about which substances will sink and which ones will float