Hydrometers will be used to make indirect measurements of changes in the salinity of saltwater.
{"Image DocumentName": "Hydrometers will be used to make indirect measurements of changes in the salinity of saltwater.", "Image ImageDescription": "If you lower a hydrometer into a tall tube containing a liquid or a solution, it will sink to a certain depth. If a hydrometer is in pure water at 4\u00ba Celsius, the scale on the hydrometer should indicate that the specific gravity of the water is 1.0. Saltwater contains dissolved salts and is more dense than pure water. If the hydrometer is in a saltwater solution, it will float higher in the liquid and indicate that the specific gravity is greater than 1.0. The higher the salinity of the saltwater, the higher the hydrometer will float in the saltwater, and vice versa. You goal is to observe changes that occur in the salinity of saltwater as ice forms on the surface of the saltwater..", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}