Nuclear Chemistry

Which of the following is an example of nuclear fusion? 

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

Which of the following best describes the process of nuclear fission? 

• Splitting an atom's nucleus apart 
• Separating an atom's electrons from its nucleus 
• Fusing two atomic nuclei together 
• Splitting an atom's electrons in half 

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

• Nuclear fusion
• Full-life
• Dead time
• Half-life

In fission neutron is often used to start the reaction and it is also a product of the reaction. This is called a ____

• neutron emission
• nuclear fusion
• domino effect
• chain reaction

This type of  reaction occurs when a heavy nucleus, such as U-235, splits into two or more parts. [KEY WORD: SPLIT]

• Fission
• Fusion
• Chain reaction
• synthesis

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

• nuclear decay
• nuclear mass
• isotopes
• radon

The process of the production of lighter nuclei from heavier nuclei is called

• mass energy
• magneticism
• fusion
• fission

Radioactive materials have unstable...

• electrons
• protons
• nuclei
• neutrons

In which process does a heavy nucleus split into two lighter nuclei?

• freezing

• condensation

• fission

• fusion

What is one benefit associated with a nuclear fission reaction?

• The products are not radioactive.

• Stable isotopes are used as reactants.

• There is no chance of biological exposure.

• A large amount of energy is produced.