Download Chemistry Test: Transmutation Multiple Choice 1. Identify the new

Chemistry Test: Transmutation
Multiple Choice
1. Identify the new element when an alpha particle is emitted from In-115.
a. Sn-118
b. Sb-119
c. Sn-115
d. Ag-111
2. Identify the new element when a neutron decays in Te-128.
a. Sn-124
b. I-131
c. I-128
d. Xe-132
3. The half-life of
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
is 32 minutes. How much of a 16.0-g sample of this isotope will remain at the end
of 3.0 hours?
a. 14.15g
b. 8.0g
c. 0.324g
d. 2.37g
Which of the following travels fastest?
a. alpha particles
c. gamma rays
b. beta particles
d. All travel at the same speed.
How does the nucleus of an atom change after a gamma irradiation?
a. The atomic mass reduces by four and the atomic number reduces by two.
b. The atomic mass remains the same, but the atomic number increases by one.
c. The atomic mass remains the same, but energy is lost as the nucleus decays.
d. The atomic mass changes by one, but the atomic number remains the same.
Identify the new element when an alpha particle is emitted from Pu-244.
a. Cm-240
b. Am-244
c. U-240
d. Np-244
Which of the following lists ranks nuclear radiation from most massive to least massive?
a. alpha, beta, and gamma
c. gamma, alpha, and beta
b. beta, gamma, and alpha
d. gamma, beta, and alpha
What is the product of -ray emission from a radioactive isotope of lead?
a. Thallium
b. Mercury
c. Bismuth
d. Lead
Identify the new element when a neutron decays in Pt-195.
a. Au-195
b. Ir-195
c. Hg-191
d. Os-191
The most penetrating form of nuclear radiation is ____.
a. alpha rays.
b. beta rays.
c. gamma rays.
d. positrons.
The half-life of an isotope is the time required for half the nuclei in a sample to
a. undergo radioactive decay.
c. undergo nuclear fusion.
b. undergo nuclear fission.
d. react chemically.
Which statement is true about half-lives?
a. Different atoms of the same nuclide have different half-lives.
b. Each radioactive isotope has its own half-life.
c. All radioactive nuclides of an element have the same half-life.
d. All radioactive nuclides have the same half-life.
The energy released in a nuclear reaction comes from
a. electrons.
c. positrons.
b. bonds.
d. the binding energy of the nucleus.
The isotope strontium-90 is produced during the testing of nuclear weapons. If 100.0 mg of strontium-90
was released in the atmosphere in 1960, how much of the radioisotope remains 85 years later? The half
life of strontium-90 is 29 years.
a. 50mg
b. 13.12mg
c. 78.95mg
d. 22.46mg
15. In an atom, the strong nuclear force acts on ____.
a. protons only.
c. protons and neutrons
b. neutrons only.
d. protons, neutrons, and electrons.
16. In an artificial transmutation, what is required to bombard nuclei with positively charged alpha particles,
protons, and other ions?
a. great quantities of energy
c. a particle accelerator
b. small quantities of energy
d. Both (a) and (c)
17. A radioactive compound cbalt-60 has a half-life of 5272.0 years. What will be the amount remaining in a
10.0-g sample after 1600.0 years?
a. 1.01g
b. 5.0g
c. 6.72g
d. 8.11g
18. The radioisotope technetium-99 is often used as a radiotracer to detect disorders of the body. It has a
half-life of 6.01 hours. If a patient received a 25.0-mg dose of this isotope during a medical procedure,
how much would remain 48.0 hours after the dose was given?
a. 22.5mg
b. 12.5mg
c. 0.098mg
d. 6.21mg
19. Identify the new element when an alpha particle is bombarded into Sg-266.
a. Db-263
b. Bh-269
c. Hs-270
d. Bh-266
20. Identify the new element when an alpha particle is bombarded into Cd-112.
a. Sn-115
b. In-108
c. Ag-108
d. In-115
21. The process(es) that changes the identity and number of protons in a nucleus is
a. fusion.
c. fission.
b. transmutation.
d. All of the above
22. Which of the following particles has the same mass as an electron but a positive charge and is
sometimes emitted from the nucleus during radioactive decay?
a. beta particle
b. alpha particle
c. positron
d. gamma ray
23. Which of the following generally have the lowest penetrating ability?
a. alpha particles
b. beta particles
c. gamma rays
d. All have the same penetrating ability.
24. Which element on bombarding with an alpha particle gives
a.
b.
c.
?
d.
25. The half-life of calcium-47 is about 5 days. Starting with 64 g of this isotope, what would be the amount
remaining after 20 days?
a. 32 g
b. 16 g
c. 8 g
d. 4 g