A bit of History
Radioactivity
Models
Nuclear Reactions
% Abundance
100
J.J. Thomson used Cathode Rays to discover this negative particle having electrical and magnetic properties.
What is the electron?
100
This is the symbol, mass #, and atomic # of an Alpha particle.
What is 4, 2, He written correctly?
100
This is general description of Dalton's model of the atom.
What are whole indivisible particles?
100
A possible nuclear FUSION reaction is: H-2 + _________ -> He-3 + γ
H-1
100
Explain why the following % abundance is incorrect: Li-7 7.015122 amu 7.59% Li-8 8.016004 amu 92.41%
It would result in an average amu closer to 8 rather than 7 - SEE PERIODIC TABLE!
200
Eugen Goldstein used Anode Rays filled with H2 gas to discover this particle having the opposite charge of Cathode Rays.
What is the proton?
200
This is the symbol, mass #, and atomic # of an Beta minus particle.
What is 0, -1, e written correctly?
200
This is general description of Thomson's model of the atom.
What is an equal dispersion of positive (proton) charge, interspersed with tiny negative particles (electrons)?
200
A possible nuclear FISSION reaction is: U-235 + neutron -> _______ + Xe-142 + 2 neutrons.
Sr-92
200
Explain why the following % abundance is incorrect: F-20 19.998403 amu 100%
It would result in an average amu closer to 20 rather than 19 - SEE PERIODIC TABLE!
300
James Chadwick bombarded Be-9 with Alpha particles to produce C-12 and this neutral particle having a mass the same as a proton.
What is the neutron?
300
This is the symbol, mass #, and atomic # of an Gamma particle.
What is 0, 0, gamma written correctly?
300
This is general description of Rutherford's model of the atom.
What is a planetary model in which protons and neutrons form the dense mass in the center (nucleus), with electrons orbiting around it?
300
A possible nuclear FISSION reaction is: U-235 + neutron -> Kr-92 + ________ + 3 neutrons.
Ba-141
300
These are the factors involved in calculating the ATOMIC MASS UNITS provided on the Periodic Table.
What is 1) The mass of individual isotopes of an element 2) The % abundance of the individual isotopes of an element
400
These are the two comparisons between charge and size of electrons and protons that resulted in the Plum Pudding Model.
What is 1) Electrons are negative, Protons are positive. 2) Electrons are 1000x smaller than Protons.
400
Heavier elements on periodic table have a higher ratio of this particle.
What is neutrons : protons? What will decay spontaneously from this?
400
If there was a container holding 1kg of p+ and 1kg of e-, this container would have the greater relative charge.
What is 1kg of e-?
400
A possible nuclear FISSION reaction is: U-235 + neutron -> Rb-90 + ________ + 2 neutrons.
Cs-144
400
Fr-221 -> α + __________
At-217
500
Ernest Rutherford headed the experiment that shot Alpha Particles at a thin sheet of gold atoms, proving these three things about the atom.
What is 1) the atom is mostly empty space, 2) the center of the atom is extremely dense with mass, 3) the center of the atom is positively charged.
500
Lighter elements on periodic table have a higher ratio of this particle.
What is protons : neutrons? What will decay spontaneously from this?
500
If there was a container holding 1kg of p+ and 1kg of e-, this container would have the greater number of particles.
What is 1kg of e-?
500
A possible nuclear FUSION reaction is: H-3 + _________ -> Li-7 + γ
He-4
500
__________ -> α + Tl-205
Bi-209
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