What are the physical properties of water such as density, buoyancy, salinity, pH/acidity, freezing point, boiling point, and others in saltwater and freshwater?
Answer Many of the physical properties of water are dependent upon the concentrations of the substances in the water. For pure water: • Density = 1 • Buoyancy = irrelevant • pH/acidity = 7.0 or neutral • Freezing point = 0 degrees Celsius or 32 degrees Fahrenheit • Boiling Point = 100 degrees Celsius or 212 degrees Fahrenheit Freshwater contains small quantities of dissolved substances which are generally called salts. It also contains various amounts of suspended solids. Both of these components affect the physical properties of water depending on the amount of the substances present and the particular properties of the substances. Ocean saltwater contains about every substance found on this planet. The predominant substances in saltwater are sodium chloride (table salt) and various amounts of magnesium, carbonate, and sulfate salts. These components have a strong effect on the physical properties of water, but the effect is still dependent on the amounts of the components present. Th