(Chap.1) Historical Background of Chem Flashcards
(46 cards)
he studies the pitchblade in the year____
Wilhelm Roentgen
1895
- exact weights
of each constituent is founds.
quantitative analysis
Aristotle discovered
three types of radioactivity. TRUE or FALSE
FALSE
believed that
when a substance is burned,
phlogiston was added from the air
to the flame.
Johann J. Beecher
he discovered the mass of electron in the year____
Robert Milikan
1909
also known the Death of Alchemy
end of the 17th Century
concerned with
the physical properties of materials.
Physical Chemistry
is the study of
chemical elements and their
compounds (with the exception of
carbon compounds).
Inorganic chemistry
found out that
cathode rays were negatively
charged-__________-
J.J Thompson
electrons
collection of
techniques that allows exact laboratory
determination of the composition of a
given sample of material.
analytical chemistry
what theory was disproved in 1774-1794?
Phlogiston theory
Year when Alchemists tried and failed to create an
elixir to elongate life and cure ailments.
1520
it is the year that proclaims atom to be the simplest unit of matter
400 bc
discovered that given
two particles separated by a certain
distance
Charles Coulomb
he declares fire, air, water,
and earth as the only four
elements.
aristotle
they are the one attempted to transmute
cheap metals to gold
alchemists
what year and who invented the vacuum tube?
1854, Heinrich Geissler
both warned US of Germany’s
research on atomic fission
reaction. The US developed the
first working nuclear fission
reactor.
Albert Einstein and Enrico Fermi
what year does known metals recorded and listed in
conjunction with heavenly bodies?
1700 BC
the __________ or
__________ is ___________ proportional to the
product of the two charges and is
___________ proportional to the distance
between the two charges.
force of attraction or repulsion directly proportional
inversely proportional
Who discovered the cooking hypothesis?
richard wrangham
he bombards elements with
neutrons to produce elements of the next
highest atomic number.__________ occurred when he bombarded uranium with
neutrons
Enrico Fermi
Nuclear Fission
year of advent of alchemists
300 BC- 300 AD
it is the study of compounds of carbon
Organic chemistry
