General Organic And Biological Chemistry 2nd Edition By Frost – Test Bank
Chapter 9: Nuclear Chemistry
1. An alpha particle is a high-energy particle that contains
A)One proton and one neutron.C)Two protons and two neutrons.
B)One electron.D)One proton.
Ans: C Difficulty: Easy
2. Which type of radiation has a negligible mass and a charge of +1?
A) Alpha particle B) Gamma ray C) Positron D) Beta particle
Ans: C Difficulty: Easy
3. Which is the symbol for a beta particle?
A) B) C) D)
Ans: C Difficulty: Easy
4. Phosphorous-32 is used for organ imaging. How many neutrons are present in this radioisotope?
A) 15 B) 17 C) 32 D) 47
Ans: B Difficulty: Medium
5.
Which species completes the nuclear equation shown below?
® _____ +
A) B) C) D)
Ans: B Difficulty: Medium
6. What does it mean if a substance is described as being radioactive?
A)The substance emits high-energy particles or rays from its unstable nucleus.
B)The substance was exposed to radiation that was given off by a decaying nucleus.
C)The substance readily absorbs energy from the radiofrequency region of the electromagnetic spectrum.
D)The substance is extremely small and special radiomicroscopes are necessary to view it.
Ans: A Difficulty: Easy
7.
Which species completes this nuclear equation shown below?
® _____ +
A) B) C) D)
Ans: B Difficulty: Medium
8. The half-life (t1/2) of a radioactive isotope depends on which of the following?
A)The amount of the radioisotope present
B)The isotope
C)The temperature
D)The pressure
E)All of the factors listed above
Ans: B Difficulty: Easy
9. If the half-life of phosphorus-32 is 14.3 days, how much of a 200. mg sample of phosphorus-32 remains after 71.5 days?
A) 100. mg B) 50. mg C) 12.5 mg D) 6.25 mg
Ans: D Difficulty: Medium
10. What is the estimated age of an artifact that has 1/16 of the amount of carbon-14 (relative to carbon-12) compared to living organisms? (C-14 t1/2 = 5,730 years)
A)358 yearsD)28,650 years
B)22,920 yearsE)17,190 years
C)5,730 years
Ans: B Difficulty: Difficult
11. Which unit of radioactivity is equivalent to 3.7 × 1010 disintegrations/second?
A) 1 Ci B) 1 mCi C) 1 mCi D) 1 Bq
Ans: A Difficulty: Medium
12. To treat a thyroid tumor, a patient must be given a 150-mCi dose of iodine-131, supplied in a solution containing 32 mCi/mL. What volume of solution must be administered per dose?
A) 1.0 mL B) 4.7 mL C) 4,800 mL D) 32 mL
Ans: B Difficulty: Medium
