Nuclear Chemistry Quiz

the half-life 131-I is 8.07 days. What fraction of a sample of 131-I remains after 24.21 days?

• 1/2

• 1/4

• 1/8

• 1/16

Using equal masses of reactants, which statement describes the relative amounts of energy released during a chemical reaction and a nuclear reaction?

• The chemical and nuclear reactions release equal amount of energy

• the nuclear reaction releases half the amount of energy of the chemical reaction

• The chemical reaction releases more energy than the nuclear reaction

• The nuclear reaction releases more energy than the chemical reaction

which process occurs in a controlled fusion reaction

• Neutron bombardment splits light nuclei

• Light nuclei collie to produce heavier nuclei

• Neutron bombardment splits heavy nuclei

• Heavy nuclei collide to produce lighter nuclei

If 3.0 grand of 90-Sr in a rock sample remained in 1989, approximately how many grams of 90-Sr were present in the original rock sample in 1933?

• 9.0g

• 3.0g

• 12g

• 6.0g

Particle accelerators are primarily used to

• Detect radioactive particles

• identify radioactive particles

• Increase a particles kinetic energy

• Increase a particles potential energy

Which particle has a mass that is approximately 1/1,836 of the mass of a proton?

• an electron

• an alpha particle

• a neutron

• a gamma ray

Which reaction releases the greatest amount of energy per kilogram of reactants?

• 
• 
• 
• 

what is the half-life and decay more Rn-222?

• A 1.91 days and alpha decay

• 3.82 days and alpha decay

• 1.91 days and beta decay

• 3.82 days and beta decay

Which change occurs during a nuclear fission reaction?

• Covalent bonds are converted to ionic bonds

• Isotopes are converted to isomers

• Temperature is converted to mass

• Matter is converted to energy

Which of the following particles has the smallest mass?

• electron

• hydrogen atom

• neutron

• proton