
Make Up Grade Nuclear Chemistry
Authored by William Jenkins
Chemistry
9th Grade

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is radioactivity?
The process in which an unstable nucleus changes by emitting particles or releasing energy.
The process of splitting a nucleus into smaller fragments.
The combination of light nuclei into a heavier nucleus.
The emission of light from a stable nucleus.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which particle has a positive charge and is located in the nucleus?
Gamma ray
Proton
Neutron
Electron
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the mass of an electron compared to a proton?
0 amu
1840 amu
1/1840 amu
1 amu
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an isotope?
Atoms with the same number of electrons but different numbers of protons.
Atoms with the same number of protons and neutrons.
Atoms with the same number of neutrons but different numbers of protons.
Atoms with the same number of protons but different numbers of neutrons.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is alpha decay?
A type of decay where a neutron splits into a proton and an electron.
A type of decay where an atomic nucleus emits an alpha particle.
A type of decay where a nucleus emits a gamma ray.
A type of decay where a nucleus absorbs a neutron.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the half-life of a radioactive substance?
The time required for all atoms to decay.
The time required for one-half of the atoms to undergo decay.
The time required for a nucleus to emit a beta particle.
The time required for a nucleus to emit an alpha particle.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a decay curve?
A graph line representing the constant radioactivity over time.
A graph line representing the decrease of radioactivity with time.
A graph line representing the increase of radioactivity over time.
A graph line representing the fluctuation of radioactivity over time.
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