No; seawater is essentially a mixture of water, salt and other substances such as sand.
Seawater is a mixture of different elements and compounds. It is primarily composed of water and contains dissolved salts, minerals, and other substances. So, seawater is not an element but a complex mixture of different compounds.
Wee
Sodium chloride (salt) is the most commonly extracted element from seawater. Other elements that can be extracted include magnesium, calcium, and potassium.
A trace element is considered is a specific element that contains less than 100 parts per million in a sample. In this case, the sample is seawater. According to my understanding, the presence of iodine is very limited in seawater. There is only 0.05 parts per million of iodine in seawater. As such, iodine is considered a trace element in seawater.
sodium is an element and also can be an ingredient of a compound. Sea water contains sodium(salt). They say rainwater is acidic, and if it is then the seawater also contains a form of acid, which is a compound to many types of solutions. Answer to your question: BOTH
Sodium, Na
seawater
Seawater is water (H2O which is a compound) containing soluble compounds but also insoluble materials. We can consider, with approximation, that the seawater is a homogeneous solution.
sodium and chlorine
Seawater is a good place to find Sodium.
It's a solution; water with dissolved solids.
Sodium is commonly found in table salt (sodium chloride) as well as in various minerals and ores. It is also present in seawater and in many foods as a naturally occurring element.