yes the egg can float on salt water because salt has more density than an egg. The egg less density so it is denser and can't brake threw the salt water. AANNDD,,Because the density of the egg is higher than the density of tap water, so it sinks. Density (ρ), as shown below in Equation 1, is the mass (m) of a material per unit volume (v). For example, the density of freshwater under standard conditions is approximately 1 gram (g) per cubic centimeter (cm3). In other Words, if you filled a 1-cm x 1-cm x 1-cm box with freshwater, the water inside the box would have a mass of 1 g. Adding salt to the water increases the density of the water, because the salt increases the mass without changing the volume very much. With enough added salt, the saltwater solution density is higher than the egg's, and the egg will then float.
Equation 1:m
ρ =
v
ρ = Density in whatever units are used for mass and volume.
m = Mass in grams (g), kilograms (kg), or any other unit of weight.
v = Volume in centimeters cubed (cm3), meters cubed (m3), or any other unit of volume.
