The times
In 1789 name one person who was credited with having published "The Table of Simple Substances"?
Who are Antoine Lavoisier and/or L.B.G. deMorveau?
What is lead?
Which two items were thought to be elements but were removed from the list?
What are Light and heat
The scientist who is responsible for synthesizing the short-lived radioactive elements that are heavier than Ac.
Who is Seaborg?
In what year was "Table of Simple Substances" published?
What is 1789?
This guy along with Mendeleev, thought elements could be organized by properties.
Who is Julius Lothard Meyer?
Au
What is gold?
By 1789, elements were could be categorized this way.
What is metals and non-metals?
The current number of elements on the periodic table.
What is 118?
The Middle Ages
In 1869, this scientist proposed that the table was missing 3 elements.
Who is Mendeleev?
Sn
what is tin?
What are boron (B) and fluorine (F)?
The year when the current layout of the periodic table was settled on.
By this year, elements were organized by weight.
What is 1864?
The scientist who discovered the noble gases and wanted to add them as another column on the periodic table.
Who is William Ramsay?
Hg
What is mercury?
By 1869, these three elements were discovered that showed Mendeleev's prediction about missing elements was correct
What are gallium, scandium, and germanium?
The chemical symbol of the element named for the scientist Yuri Oganessian
What is Og?
The time frame when it was decided that the elements should be organized by atomic number.
What is 1913-1925?
The x-ray emission studies that provided a precise method for identifying elements were done by this scientist.
Who is Moseley?
Cu
What is copper?
What is 101, Md?
The person for whom the element with chemical symbol Sg is named.
Who is Seaborg?