Question 1

What are the number of protons, the number of neutrons, and the mass number of the radioisotope   ?

Accepted Answer

A) 149, 102, and 251, respectively 
B) 102, 149, and 251, respectively 
C) 102, 251, and 353, respectively 
D) 149, 251, and 353, respectively 
A) 149, 102, and 251, respectively 
B) 102, 149, and 251, respectively 
C) 102, 251, and 353, respectively 
D) 149, 251, and 353, respectively

Question 2

An alpha particle is identical to a helium atom.

Accepted Answer

A) True 
 B)False

Question 3

Which unit describes the amount of radiation absorbed by one gram of a substance?

Accepted Answer

A) rad 
B) rem 
C) Bq 
D) gray 
A) rad 
B) rem 
C) Bq 
D) gray

Question 4

In the nuclear decay reaction known as electron capture, an electron from an atom's electron cloud falls into the nucleus. Iodine-128 undergoes electron capture as shown below to produce an x-ray and another product. The isotope symbol for the other product is _____.

Accepted Answer

The answer of In the nuclear decay reaction known as...

Question 5

Which quantity represents the smallest amount of radioactivity?

Accepted Answer

A) 1 × 10-3 Ci 
B) 1 × 104 mCi 
C) 1 Bq 
D) 1 × 1010 $\mu$Ci 
A) 1 × 10-3 Ci 
B) 1 × 104 mCi 
C) 1 Bq 
D) 1 × 1010 $\mu$Ci

Question 6

Which species completes this nuclear equation shown below?   $\rightarrow$ _____ +

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 7

Nuclear fusion is the splitting apart of a heavy nucleus into lighter nuclei and neutrons.

Accepted Answer

A) True 
 B)False

Question 8

Radioisotopes that are used for diagnosis and imaging in medicine have short half-lives so they do not linger in the body.

Accepted Answer

A) True 
 B)False

Question 9

Which type of radiation has the greatest penetrating power?

Accepted Answer

A) An alpha particle 
B) A gamma ray 
C) A beta particle 
D) All of the above have the same penetrating power. 
A) An alpha particle 
B) A gamma ray 
C) A beta particle 
D) All of the above have the same penetrating power.

Question 10

The fusion of two helium-3 nuclei produces two protons and what other nucleus?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 11

How many neutrons are generated in the nuclear equation shown below?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 4 
A) 0 
B) 1 
C) 2 
D) 3 
E) 4

Question 12

Which quantity represents the greatest amount of radioactivity?

Accepted Answer

A) 1 × 10-3 Ci 
B) 1 × 104 mCi 
C) 1 Bq 
D) 1 × 10-10 $\mu$Ci 
A) 1 × 10-3 Ci 
B) 1 × 104 mCi 
C) 1 Bq 
D) 1 × 10-10 $\mu$Ci

Question 13

What does it mean if a substance is described as being radioactive?

Accepted Answer

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. 
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.

Question 14

Which type of radiation has a negligible mass and a charge of +1?

Accepted Answer

A) alpha particle 
B) gamma ray 
C) positron 
D) beta particle 
A) alpha particle 
B) gamma ray 
C) positron 
D) beta particle

Question 15

The light and heat of the sun and other stars is a result of nuclear fusion.

Accepted Answer

A) True 
 B)False

Question 16

_____ is the process by which an unstable radioactive nucleus emits radiation, forming a nucleus of new composition.

Accepted Answer

The answer of _____ is the process by which an...

Question 17

Which is the symbol for a beta particle?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 18

Only fusion can involve bombarding a nucleus with a neutron.

Accepted Answer

A) True 
 B)False

Question 19

During gamma emission there is no change in the atomic number or mass number of a radioactive nucleus.

Accepted Answer

A) True 
 B)False

Question 20

If 25 mg of an initially 200. mg sample of bromine-74 is still active after 75 minutes, the half-life of bromine-74 is _____ minutes.

Accepted Answer

The answer of If 25 mg of an initially 200....

Exam 10: Nuclear Chemistry

What are the number of protons, the number of neutrons, and the mass number of the radioisotope ?

An alpha particle is identical to a helium atom.

Which unit describes the amount of radiation absorbed by one gram of a substance?

In the nuclear decay reaction known as electron capture, an electron from an atom's electron cloud falls into the nucleus. Iodine-128 undergoes electron capture as shown below to produce an x-ray and another product. The isotope symbol for the other product is _____.

Which quantity represents the smallest amount of radioactivity?

Which species completes this nuclear equation shown below? →\rightarrow→ _____ +

Nuclear fusion is the splitting apart of a heavy nucleus into lighter nuclei and neutrons.

Radioisotopes that are used for diagnosis and imaging in medicine have short half-lives so they do not linger in the body.

Which type of radiation has the greatest penetrating power?

The fusion of two helium-3 nuclei produces two protons and what other nucleus?

How many neutrons are generated in the nuclear equation shown below?

Which quantity represents the greatest amount of radioactivity?

What does it mean if a substance is described as being radioactive?

Which type of radiation has a negligible mass and a charge of +1?

The light and heat of the sun and other stars is a result of nuclear fusion.

_____ is the process by which an unstable radioactive nucleus emits radiation, forming a nucleus of new composition.

Which is the symbol for a beta particle?

Only fusion can involve bombarding a nucleus with a neutron.

During gamma emission there is no change in the atomic number or mass number of a radioactive nucleus.

If 25 mg of an initially 200. mg sample of bromine-74 is still active after 75 minutes, the half-life of bromine-74 is _____ minutes.

Matter and Measurement

Atoms and the Periodic Table

Ionic Compounds

Covalent Compounds

Chemical Reactions

Energy Changes, Reaction Rates, and Equilibrium

Gases, Liquids, and Solids

Solutions

Acids and Bases

Introduction to Organic Molecules and Functional Groups

Alkanes

Unsaturated Hydrocarbons

Organic Compounds That Contain Oxygen, Halogen, or Sulfur

The Three-Dimensional Shape of Molecules

Aldehydes and Ketones

Carboxylic Acids, Esters, and Amides

Amines and Neurotransmitters

Lipids

Carbohydrates

Amino Acids, Proteins, and Enzymes

Nucleic Acids and Protein Synthesis

Digestion and the Conversion of Food Into Energy

Carbohydrate, Lipid, and Protein Metabolism

Filters

Which species completes this nuclear equation shown below? $Which species completes this nuclear equation shown below? \rightarrow ___ +$ $\rightarrow$ _ + $Which species completes this nuclear equation shown below? \rightarrow ___ +$