After water, SALT
The most common substance found in ocean salt is sodium chloride, which is also known as table salt. Sodium chloride makes up about 85% of the salts found in seawater.
It is a mixture
Water is the most common compound in sea water
Seawater and fresh water contains oxygen that fish absorb using their gill. So the substance is oxygen.
The most common element dissolved in seawater is chlorine, primarily in the form of chloride ions (Cl⁻). Chloride ions account for about 55% of the total dissolved salts in seawater. Sodium, in the form of sodium ions (Na⁺), is the second most abundant, and together, these two elements contribute to the salinity of ocean water.
A substance with a pH level of 8 is slightly basic. Some examples include seawater, baking soda solution, and eggs.
A solution.
The name of the common mineral salt present in seat is
WATER
It is more common to see seawater as one word. Though either seawater or sea water can be used.
Seawater is a mixture. It is a combination of salt and water that is a homogeneous mixture. An example of a pure substance is either pure salt or pure sugar.
The most important is sodium chloride; but also exist calcium, magnesium and potassium chlorides.