It's not! Pure water has a density of 1.000 g/ml. Sea water has a density of 1.025 g/ml and saturated salt water has a density of roughly 1.2 g/ml.
Water is pure by nature, however it gets dense due to different impurities. Impurities such as salt and tiny minerals cause the water to get dense.
No, rain water is almost pure water as it has evaporated and will only contain small dust particles from the atmosphere. Salt water contains disolved salt and is therfore more dense.
Cold water is more dense.
salt water
salt water is more dense than tap water
Salt water will be more dense than the water, but less dense than the salt.
on top. Wood is less dense than water to the point that it float on top of water, and salt water is more dense and has a higher surface tension than pure water so the wood would, if possible, float higher.
Salt
The density of liquids really depends on the suspended matter in it. If you have really dense concentration of salt in water, yes it could be denser than an egg. If you have merely a weak solution of salt, then the egg is denser... it depend on how much salt you have in the water.
Because the salt water is denser than pure water.
Sea water is more dense because the minerals, especially salt, make it more dense.
Things float in water if they are less dense than the water they are floating in. Putting salt in the water makes it more dense, so things that are a little more dense than ordinary water float in salt water.