When you swim in the sea, no no yes take a sip of some water. And the children will probably sip a lot.
This is a drop of seawater under a microscope. Now let's take a closer look at what's in it …
Here is a graphical representation of it:
And now in more detail:
In everyday life, a person constantly deals with fresh water - there are practically no foreign impurities in it.
Promotional video:
Another thing is the water of seas and oceans - it is rather a very strong brine than water. In a liter of sea water, there are on average 35 grams of various salts:
27.2 g table salt
3.8 g magnesium chloride
1.7 g of magnesium sulfate
1.3 g potassium sulfate
0.8 g of calcium sulfate
Table salt makes water salty, while magnesium sulfate and magnesium chloride give it a bitter taste. Taken together, salts make up about 99.5% of all substances that are dissolved in the waters of the oceans.
Other elements account for only half a percent. 3/4 of the total amount of table salt in the world is extracted from sea water.
Academician A. Vinogradov proved that all chemical elements known today can be found in sea water. Of course, not the elements themselves are dissolved in water, but their chemical compounds.