NUCLEAR CHEMISTRY TEST.

1. What is the product when alpha particles bombarded 231-Pa?

A) thorium
B) lathanium
C) uranium
D) Actinium
E) samarium

2. What is the product when Francium-223 is bombarded by beta particles.

A) radium
B) lathanium
C) neptunium
D) sodium
E) erbium

3. In nuclear notation, what is the number found at the upper left corner of the element?

A) electrons
B) protons
C) neutrons
D) atomic number
E) mass number

4. What is the particle without mass?

A) beta
B) positron
C) alpha
D) gamma
E) electron capture

5. The subatomic particles affected during nuclear reactions are

A) protons and electrons
B) protons and neutrons
C) electrons and neutrons
D) electrons
E) protons only.

6. This type of nuclear reaction refers to the splitting of the atoms.

A) fusion
B) degradation
C) regression
D) half -life
E) Fission

7. How many protons are subtracted from the original atom when bombarded by alpha particles

A) 4 protons
B) 6 protons
C) 3 protons
D) 2 protons
E) 5 protons

8. The decay of uranium by beta particles will produce this kind of element

A) fermium
B) thorium
C) the same element
D) nobelium
E) neptunium

9. Which is not a type of nuclear reaction?

A) alpha decay
B) beta decay
C) gamma decay
D) transfer of electrons
E) positron emission

10. If plutonium will be bombarded by gamma particles, what will happen to plutonium?

A) atomic number will change, but atomic mass will not change.
B) atomic mass and atomic number remains the same.
C) Both atomic mass and atomic number will change.
D) Atomic mass will change.
E) atomic number will change.

11. Which type of radiation has the greatest penetrating power?

A) Neutron emission
B) Beta particle
C) Electron capture
D) Alpha particle
E) Gamma ray

12. The technetium-99 isotope has a half-life of 6.0 hours. If 100.0 mg were injected into a patient how much remains after 18 hours?

A) 15.8 mg
B) 33.0 mg
C) 12.5 mg
D) .33 mg
E) 15 mg

13. Barium-122 has a half-life of 2 minutes. A fresh sample weighing 80 g was obtained. If it takes 10 minutes to set up an experiment using barium-122, how much barium-122 will be left when the experiment begins?

A) 2.5g
B) 50 mg
C) 0.25g
D) 25g
E) 80g

14. What does it mean when an element is radioactive?

A) All options listed.
B) Emits radioactive particles
C) Nucleus changes to become stable
D) Atom emits radiation
E) Nucleus is unstable due to uneven proton to neutron ratio

15. The time taken for half of an amount of radioactive atoms to decay.

A) Half-life
B) Full-life
C) Zero life
D) Nuclear fusion
E) Dead time

16. After the nucleus of a radioactive element undergoes changes, the element can transform into ...

A) An entirely different element.
B) Both options listed.
C) Neither option listed.
D) different isotope of the same element.

17. The process of nuclear change in an atom of radioactive material is called...

A) nuclear mass
B) radon
C) nuclear decay
D) nuclide
E) isotopes

18. Which of the following is an example of nuclear fusion?

A) A uranium atom is split apart into lighter elements
B) Two hydrogen atoms are combined to form a helium atom
C) Two hydrogen atoms bond with an oxygen atom to form a water molecule
D) A plutonium atom is used to start a chain reaction that detonates a nuclear weapon