According to the modern definition of "element", water is made up of two different elements: hydrogen, and oxygen.
how belief in the four element concept delayed the advancement of scientific thought in chemistry
One example of a substance that was once thought to be an element but is actually a mixture is brass. Historically, brass was perceived as a single metallic substance due to its uniform appearance and properties. However, it is a mixture of copper and zinc, which can vary in proportions, resulting in different types of brass with distinct characteristics. This distinction highlights the importance of understanding the composition of materials in chemistry.
Chlorine is the element that purifies water. Its symbol is Cl.
Water is a compound. it is neither element nor mixture.
Water is a compound because it is made up of two elements (hydrogen and oxygen) with polar bonds.HistoricalOf course the above is true. However in medieval times water was thought to be elemental in nature. People believed that there were 4 "elements" that composed substances: earth, air, fire and water. Everything on earth was made of some combination of these four 'elements'. There was a fifth element, the quintessence, from which we get the word quintessential, and it was thought that this element is what the stars were made of. It was also believed that this quintessence permeated everything everywhere.===Water is a compound. It is made up of two atoms of hydrogen and one atom of oxygen, therefore its molecular structure is written 'H2O'.
NO -- one at a time
In 1808, scientists thought that substances like oxygen and hydrogen were elements, but they later discovered that these were compounds made up of different elements. One substance that was thought to be an element in 1808, but is actually a compound, is water (H2O).
Tantalum.
There are a few different areas of thought to this question. One belief is Coins (earth element) for winter, Swords (air element) for spring, Wands (fire element) for summer, Cups (water element) for Fall.
Currently the moon does not contain any trace of water although there was a dried up stream found that is thought to have once carried water
There once was an element called Nickel, Who thought that he would like a pickle. He went to the store And found three or four, Before he found the pickles were fickle.
That element inside the bulb is called filament. It is not replaceable once it is damaged because you cannot remove the glass from the base without fracturing it. Moreover these ordinary bulbs are cheap so no point of replacing them.
Water is not an element
how belief in the four element concept delayed the advancement of scientific thought in chemistry
Water is not an element (H is an element, O is an element, when combined together it is not an element). See related question below.
No, water is not an element, it is a compound.
the return to "classical" thought