Nucleus Questions and Answers

Physics
NucleusWhat is common in all nuclear reactions?
They always share or transfer electrons.
They always release energy.
They always require energy.
They always form a new element

Physics
NucleusIn Einstein's famous mass-energy equivalence
equation, what does c represent?
speed of light
mass deficit
the photon
nuclear charge

Physics
NucleusWhat is lost from the nucleus of an atom when it
emits an alpha particle?
two protons only
two neutrons only
two protons and two neutrons
two protons and two electrons

Physics
NucleusWhat is the missing product from the fusion of
hydrogen?
11H+11H→________+01e
Select one:
²1H
22H
32He
31H

Physics
NucleusWhat is lost from the nucleus of an atom when it emits an alpha particle?
Select one:
O two protons and two neutrons
O two neutrons only
O two protons and two electrons
O two protons only

Physics
Nucleus3. For each example below, predict if the bonding will be ionic or covalent. i. Ca with Cl ii. C with H iii. Carbon monoxide iv. KBr v. SO₂ vi. Magnesium iodide

Physics
NucleusWhat is the rest energy of a hydrogen atom whose atomic mass is 2.014101778? (mproton=1.0078251, mneutron = 1.0086649, c2=931.5 eV/u)
940 eV
1879 eV
1876 eV
939 eV

Physics
NucleusThere are 2 naturally occurring isotopes of Lithium: Li (6.015 amu) and 'Li (7.016 amu). What are the abundances of each isotope?

Physics
Nucleus5.) Compare the three levels of energy of the alpha particle for gold. Give your best explanation why there were different interactions between the alpha particle and the nucleus.

Physics
Nucleus6.) Did the paths for the Calcium atom with max, halfway and min alpha particles exhibit the same changes as the gold atom?

Physics
Nucleus4. Which of the following can be used to describe the process of nuclear fission? Check all that apply.
a chain reaction occurs to sustain the reaction
it results in smaller still radioactive nuclei
it takes only one neutron to start a reaction
it takes place at relatively cool temperatures

Physics
NucleusWhich of the following can be used to describe the process of nuclear fusion? Check all that apply.
it takes place at relatively cool temperatures
it results in larger nuclei than the parent
it takes place at relatively high temperatures
it is the opposite of nuclear fission

Physics
NucleusWhich of the following atomic equations are accurate? (select all that apply)
A=X+N
N=Z-A
A = Z+N
Z = A + X

Physics
Nucleus15. Which scientist was awarded the Nobel Prize for his work with quantized energy?
Heisenberg
Bohr
Planck
Oppenheimer

Physics
NucleusCalculate the nuclear diameter of 238 U.
Express your answer to two significant figures and include the appropriate units.

Physics
NucleusIf an electron in hydrogen atom jumps from
3 to an orbit of level an orbit of level n
n = 2, emitted radiation has a
frequency______
(R=Rydberg's constant, C-velocity of light).
(A)3RC/27
(B)RC/25
(C)8RC/9
(D)5RC