a very very very long time ago
This is unknown and the information lost to antiquity.
Sodium was discovered in Engalnd in the year of 1807.
Blacklight wasn't invented, but it was discovered around 1801
Carbon was known from prehistoric times as graphite, coal, diamond.
Frank Epperson invented Popsicles in 1905.
the great salt lake
He thought he had discovered part of the pacific ocean
it was discovered in the 1300's
Europeans and Carabbeans.
i discovered this
Salt is not an element. It is a compound of two elements, Sodium and Chlorine.
Great salt lake
Salt is known from many millions of years because is indispensable also for animals.
Thousands of years ago the ancients mined salt ( many of those mines are still working) and it is the salt mines that gave them the salt.
Salt is and has been a necessary staple for life since the beginning. It was not discovered. It was just there. Like one person said, like water, like air. Not in little shakers with a girl on them, but in domes and outcroppings.
yttrium was discovered in the year 1794.
mickey mouse year:1995