Salt added to water in a cup makes an egg float because the saltwater's density is greater than the egg's density. Density is a substance's mass divided by its volume. When sufficient salt is added to tap water, the mass of the salt-water solution increases, but the volume remains the same.Know More
The salt water solution's density is greater than that of plain tap water. This causes the egg to float. However, if the egg is placed in tap water, then it will sink to the bottom because its density is greater than the tap water's density. In physics, this phenomenon of an object floating in a substance is called buoyancy.
In an experiment to demonstrate density and buoyancy, it is also important to figure out how much salt will cause the egg to float. Most experiments will use different concentrations of salt in water to find this piece of information.Learn more about Chemistry
Rock salt, solar salt or evaporated salt are the primary salts used in water softeners and are all primarily sodium chloride. Solar salt, made by evaporating seawater, has the lowest sodium chloride levels at 85 percent. Evaporated salt, from water sources in the earth, is 99.9 percent sodium chloride.Full Answer >
Although there are numerous ways to separate salt from water, you can use a simple solar process with minimal equipment over the course of two to three days. The required materials are a baking sheet, black paper and salt water.Full Answer >
Dissolving salt in water is an example of a chemical change. The dissolution leads the salt to break into sodium and chlorine ions, so it alters its essential chemical properties. Even though boiling salt water ends up leaving behind a residue of salt, while the salt and water are together, the chemical processes change enough to be viewed as a chemical reaction.Full Answer >
Salt does not directly affect the evaporation of water. However, the evaporation habits, temperatures and movement of certain areas of saltwater bodies can affect the salinity, or salt level, of those bodies of water, resulting in changes in evaporation and precipitation. Higher levels of evaporation and lower levels of precipitation result in higher concentrations of salt in bodies of water, while lower levels of evaporation and higher levels of precipitation result in lower concentrations of salt in bodies of water.Full Answer >