CHEM121 –( BIOCHEMISTRY AND NUCLEAR CHEMISTRY) EXAM QUESTIONS AND COMPLETE SOLUTIONS

CHEM121 –( BIOCHEMISTRY
AND NUCLEAR CHEMISTRY)
EXAM QUESTIONS AND COMPLETE
SOLUTIONS

three examples of nuclear reactions
energy generation by the sun
the destructive hydrogen bomb
atomic bomb explosions.
two basic types of nuclear reactions
Radioactive decay
Transmutation
Transmutation
Nuclear bombardment
Causes nucleus rearranges to give rise to another new
nucleus
Radioactive decay
Spontaneous breakdown into a stable isotope of the same
element or another element
Write nuclear symbols for chlorine-35
35CL17
Write the nuclear symbols for bromine-79
79Br35
Write the nuclear symbols for nitrogen-15
15N7
Write the nuclear symbol for Uranium-235
235U92
What is a nuclide

, Nucleus
Write nuclear symbols for the proton
1H1
the α-particle
4He2
the β-particle
0e-1
the neutron
1n0
the positron
0e+1.
What is a nucleon?
is any particle found in the nucleus; a proton or a neutron.
Define radioactivity
is a naturally-occurring fission nuclear reaction in which
one naturally unstable nucleus decays spontaneously.
Radioactivity nuclear reactions generally have
_________ reactant(s) and _________ product(s)
List the 5 types of radioactive decay processes
1. Alpha particle emission
2. Beta particle emission
3. Gamma photon emission
4. Positron emission
5. Electron capture
60mCo27 → 60Co27 + ?
60mCo27 → 60Co27 + 0γ0
Gamma photon emission
7Be4 + ? → 7Li3
7Be4 + 0e-1 → 7Li3
Electron Capture
180Hg80 → 176Pt78 + ?