Scientists
Which scientist was awarded the Nobel Prize in 1911 for the discovery of the radioactive elements, radium and polonium?
Marie curie
How many electrons can occupy an s orbital
2
What is the common name for calcium oxide, CaO
Lime, Quick lime
Which term used for the resistance of a liquid system to flow?
Viscosity
How many electrons are there in the valence shell of a calcium atom
2
Who was the first American chemist to receive a Nobel Prize? He was selected in 1914 for his precise determination of atomic weights.
THEODORE RICHARDS
Which of the following is a necessary characteristic for electrons that share an s orbital
Opposite spins
Which noble gas has the highest melting point
Radon
Bauxite is a mineral that primarily contains which metal?
Aluminum
Who is credited, in the history of modern chemistry, with discovering X-rays?
WILLIAM ROENTGEN
Who is accredited in the history of modern chemistry of proving that neutrons existed
JAMES CHADWICK
The modern atomic theory was conceived by
John Dalton
What is aqua regia
3 HCl and 1 HNO3- Used to melt gold
As water solidifies it does the following:
Expands and gives of heat
The chemical symbol for antimony is:
Sb
Name the person who developed a table of elements which revealed regularities in elemental properties?
ANSWER: DMITRI MENDELEEV
Who discovered Nitrogen
Rutherford
How many milligrams are in one metric carat
200
By what name is dinitrogen oxide commonly known
Laughing gas
Moth balls contain:
Napthalene
Who constructed the first cyclotron?
(ERNEST O.) LAWRENCE
What does the acronym NMR stand for:
Nuclear magnetic resonance spectroscopy
the substance that is considered to be the earliest stage in coal formation is
Lignite
Which Greek philosophers proposed the first atomic theory around 400 B.C.?
DEMOCRITUS
The first organic compound synthesized in 1828 by Frederich Wohler was.----------. FOund in urine
Urea