(Chap.1) Historical Background of Chem Flashcards
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
who proclaims atom to
be the simplest unit of matter?
Democritus
who disproved the phlogiston theory?
Antoine Lavoisier
what are the Subcategories within Physical Chemistry
thermochemistry
electrochemistry
chemical kinetics
on what year and who discovered
positive particles- _______
hydrogen gas filled tubes
Eugene Goldstein
Protons
year when the cathode rays was invented
1879
what discovery occured in 1940’s?
The Manhattan Project
what does dalton atomic theory states?
All matter is composed of atoms, which are small and indivisible.
what book and wo is the author that disproved of Aristotle’s
four elements destroyed alchemy.
The Skeptical Chemist, Robert Boyle
What are the divisions of chemistry?
Organic Chemistry
Physical Chemistry
Analytical Chemistry
Inorganic Chemistry
year of failure of gold transmission
1200’s-1400’s
he failed in
determining the number of
protons within the nucleus
because neutrons were not yet
discovered
Henry Mosely
“to be human is to transform matter”
homo chemicus
he is the one who use vacuum tubes to discover ___________
William Crookes, cathode rays
they artificially created
elements by bombarding alpha
particles to certain elements.
Irene Curie and Frederic
Joliot-Curie
subcategories of analytical chemistry that the identification of
atoms and molecules present in
compound
qualitative analysis
year when artificial radioactive elements occurs
1934
what law and theory happened in 1700’s?
Coulomb’s Law and Phlogiston Theory
he bans the gold making
Pope John XXII
______________ discovered thorium
and uranium within pitchblende.
She then discovered _______ and
___________- two previously unknown
elements
Marie Currie
radium and polonium
He discovers the neutron in the year 1932
James Chadwick
who Discovered and what are the three types of radioactivity
ernest rutherford
alpha particles, beta particles and gamma rays
what is the mass of electron?
9.11x10^-28
