Quiz 4

Question 1

Alpha decay

Answer 1

2 protons and 2 neutrons

daughter nuclide has a mass of 4 less and an atomic number of 2 less

Question 2

Beta decay

Answer 2

neutron is converted into a proton and electron
mass number doesn’t change
daughter’s atomic number is one greater than parent

Question 3

Gamma ray emission

Answer 3

high energy protons are emitted

Question 4

parent nuclide

Answer 4

nuclide that undergoes decay

Question 5

daughter nuclide

Answer 5

nuclide produced as result of radioactive decay process

Question 6

transmutation

Answer 6

the conversion of an atom of one element to an atom of another element

the identity of the parent nuclide is changed to that of another nuclide.

Question 7

bombardment reaction

Answer 7

a nuclear reaction brought about by bombarding stable nuclei with small particles travelling at very high speeds

Always two reactants and two products

Question 8

products of bombardment reaction

Answer 8

positron emission and electron capture

Question 9

mode of decay: neutron to proton

Answer 9

positron emission and electron capture

Question 10

3 patterns in nuclear composition that determine the predominant form of radioactive decay

Answer 10

a) Unstable nuclei in which the neutron to proton ratio is too high
b) Unstable nuclei in which the neutron to proton ratio is too low
c) Unstable nuclei in which the total number of nucleons exceeds 209

Question 11

mode of decay when proton to neutron ration is too high

Answer 11

beta decay

Question 12

mode of decay when proton to neutron ration is too low

Answer 12

positron emission or electron capture