Nuclear Chemistry Review

What occurs in a nuclear power plant when Uranium-235 splits into two smaller isotopes?

• nuclear fusion

• nuclear fission

• a chemical reaction

• a neutralization reaction

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NGSS.HS-PS1-8

The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed?

• 25g

• 50g

• 75g

• 100g

Tags

NGSS.HS-PS1-8

How many half-lives does it take a radioactive substance to decay until only one-eighth of the original substance remains?

• two

• three

• six

• eight

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NGSS.HS-PS1-8

The high energy yields created by nuclear fission are due to...

• binding nuclei.

• hydrogen bonding.

• secondary recovery.

• chain reactions.

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NGSS.HS-PS1-8

Nuclear reactors convert heat energy into mechanical energy, used to generate electrical energy, by...

• harnessing electromagnetic discharge.

• turning a turbine with steam.

• gathering solar radiation.

• using an electron transfer system.

Tags

NGSS.HS-PS3-3

Which of the following BEST describes what occurs in a fusion reaction?

• Two low mass nuclei are joined to form one nucleus and gives off energy.

• A single nucleus divides into two or more nuclei and gives off energy.

• Electrons are shared between the nuclei.

• A chemical reaction occurs between the nuclei.

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

What happens when the number of protons in an atom changes? 

• The number of electrons changes too 
• Usually nothing happens, unless the atom is radioactive 
• The atomic nucleus explodes
• It becomes a completely different atom, with different properties 

In what part of an atom can protons be found? 

• Inside the electrons
• Inside the neutrons 
• Inside the atomic nucleus 
•  Inside the electron shells

Tags

NGSS.HS-PS1-8

Which type of nuclear radiation is being emitted here?

• alpha
• beta
• gamma
• none

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NGSS.HS-PS1-8

Which type of nuclear radiation is being emitted here?

• Alpha
• beta
• gamma 
• none

Tags

NGSS.HS-PS1-8