Test 2 – Chemistry Flashcard

antiparticle of the electron
positron
element Priestly discovered
oxygen
Who discovered the electron and how?
thomson cathode ray experiment
bond formed by a give and take of electrons
ionic
charge of the electron
1.602 X 10^-19 Coulombs
mass of proton
1.673 x 10^-27 kg
who discovered x rays
roetgen
production results i higher neutron/proton ratio
positron
isotope used to study the thyroid gland
iodine
radioactive particle with the greatest potential to cause damage
alpha
density, color, and boiling point is examples of what because they are independent of the amount of substance present
intensive physical property
what was it theorized that phlogiston flowed from
burning materials
how did Priestly discover oxygen?
mercury (mercuric II) oxide
a given compound always contains exactly the same ratio of elements by mass is stated in what
law of definite proportions
who derived the law of definite proprtions
proust
when two elements form a series of compounds, the ratios of the masses of the second element that combine with one gram of the first element can always be reduced to small while numbers stated in what
law of multiple proportions
Who performed the oil drop experiment
Robert millikan
who discovered the negativelycharged electron using the cathode ray tube
jj thomson
what is the charge of electron with unites
1.062×10^-19 Coulombs
mass of the elctron
9.11 x 10^-31 kg
who discovered radioactivity involving uranium and images on photographic plates
Becquerel
who discovered the nucleus
rutherford
the nucleus was discovered using alpha particles in what experiment
gold foil
mass of neutron
1.675 x 10^-27 kg
mass of proton
1.63 x 10^-27 kg
the proton and neutron are about how many times larger than the electron
1800
bond formed from sharing of electrons
covalent
difference in the number of which subatomic particle forms an isotope
neutron
which substance on pt tends to become anions
nonmetals
difference in the number of which subatomic particle forms an ion
electron
elements in middle of pt
transition
high speed electron
beta particle
high energy photon
high speed electron
What happens during positron production?
a proton is changed to a neutron and is actually an antiparticle of the electron
carbon dating is used for what
date once living things
what can thallium 201 be used for
assess damage of the heart muscle after a heart attack

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