Question: what is the chemical difference between sea salt and table salt?
Answer: Table salt and most sea salts both contain 40% sodium by weight. A teaspoon of table salt has 2,300 milligrams (mg) of sodium. The crystals of sea salt are larger, so fewer crystals can fit in 1 teaspoon. Since less sea salt can fit in the same volume, people may believe sea salt has less sodium than table salt.