Nuclear Chemistry Test Review

Nuclear Decay Types

100

Complete the reaction: 

²²²₈₆Rn --> ⁴₂He + _____

²¹⁸₈₄Po

200

Complete the reaction: 

³²₁₅P --> ____ + ⁰_-1e^-

Beta Particle

⁰_-1e_-

300

What is the mass number of the missing element? 

¹⁰⁸₄₆Bi --> ____ + alpha particle

²⁰⁴₈₁Xe 

Mass Number = 204

Nuclear Vocabulary

100

Spontaneous emission of particles and/or energy during nuclear decay

Radioactvity

200

Refers to the particles or energy release during nuclear decay

Radiation

300

Spontaneous disintegration of a nucleus

Nuclear Decay

Isotopes

100

What does the # in Carbon-12 tell us? 

Mass number (protons+neutrons) 

200

What element has 9 protons, 10 neutrons, and 9 electrons. Use hyphen notation. 

Fluorine- 19

300

How many neutrons are in Uranium-235? 

235-92= 143 neutrons 

Avg Atomic Mass

100

What is the average atomic mass of Silicon if:

Silicon-27 has 84.25% abundace and

Silicon-28 has 15.75% abundace? 

27.16amu

200

Krypton has 2 isotopes: 

Krypton-83 has mass of 83.21 and is 96.46% abundant

Krypton-84 has mass of 84.21 and is 3.45% abundant. 

What is the average atomic mass? 

83.17amu 

Fission and Fusion

100

Heavier nuclei split to form lighter nuclei

Fission

200

This reaction is used in nuclear power plants

Fission

300

This reaction is found on the sun and in stars

Fusion