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Who discovered what elements were combined to make up water?
The composition of water, made up of hydrogen and oxygen, was first discovered by the English scientist Henry Cavendish in 1781. He conducted experiments that identified water as a compound of these two elements.
What did the gaps on Mendeleev's tabel represent?
He predicted that elements with the predicted properties would be discovered to fill in these gaps.
When Mendeleev developed the first periodic table there were approximately how many elements known?
By 1869, a total of 63 elements had been discovered.
What did Marie curie descover first?
Marie Curie discovered the elements polonium and radium.
What two elements were discovered by Marie Curie in 1898?
Marie Curie discovered the elements polonium and radium in 1898. She was the first person to isolate polonium and radium from natural sources and conducted groundbreaking research on radioactivity.
Many of the first discovered elements were named by?
Many of the first discovered elements were named by their discoverer or the location where they were discovered, such as hydrogen, named by Antoine Lavoisier, and uranium, named after the planet Uranus.
5 elements discovered since the 1800?
Helium, neon, argon, krypton, and xenon were all discovered after 1800. These noble gases were first isolated from air and had distinct properties that led to their identification as new elements.
The existence of elements was first discovered by?
Dalton
Which first elements were first discovered?
The first elements to be discovered were those that occur naturally in the environment, such as gold, copper, iron, and sulfur. These elements were known to ancient civilizations long before the concept of elements was formally developed.
Who was the scientist that discovered the periodicity of the elements?
Mendeléev, Dmitri (1834-1907)Discovered periodicity of the elements. Compiled the first Periodic Table with elements arranged into 7 groups (1869).
Who first invented the element silicon?
Elements are discovered, they are not invented.
Where neptune and plutonium the first transuranium elements discovered?
Neptunium and plutonium were discovered in United States in 1940.
How were the first 5 states of the US discovered?
The first five states werent discovered they were founded
How many elements had been discovered by 1959?
97 elements were known in 1950. Berkelium (Element 97) was discovered in December 1949.
What were the first four elements used in chemistry?
If you mean the elements that are gases at standard temperature and pressure the the first four gases to be discovered are: hydrogen (H) was discovered by Henry Cavendish in 1766; nitrogen (N) was discovered by Daniel Rutherford in 1772; oxygen (O) was discovered by Joseph Priestly in 1774; and chlorine (Cl) was discovered by Carl Wilhelm Scheele in 1774.
How many elements have been created or discovered by scientist?
Scientists have discovered and created a large number of elements thus far. Currently, there are 118 confirmed elements on the periodic table, with the first 92 occurring naturally and the rest being synthetic elements created in laboratories.
What important scientific discovery did dimitri mendeleev make about materials?
Dmitri Mendeleev discovered the periodic law and created the first version of the periodic table of elements, organizing known elements by increasing atomic mass and predicting properties of undiscovered elements.
