Final Exam Review Physical Science

A Helium atom is emitted during which type of decay?

• Gamma

• Fusion

• Beta

• Alpha

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NGSS.HS-PS1-8

An electron is emitted during what type of decay?

• Gamma

• Fusion

• Beta

• Alpha

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Which definition best describes radioactivity?

• The distance from which the valence electrons reside from the charged nucleus 

• The process by which radio waves are received 

• The process by which people get superpowers 

• The emission of energy from an unstable atom or element

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NGSS.HS-PS1-8

Which definition best describes a half life? 

• The time in which it takes for half of a substance to decay 

• The time in which it takes for all of a substance to decay 

• The time in which it takes for one fourth of a substance to decay 

• The time in which it takes to decay 22 percent of a substance

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NGSS.HS-PS1-8

Select the type of decay that is the strongest. (Hint: think about which one needs a lead block in order to stop)

• Alpha

• Beta

• Gamma

• Fission

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Which type of decay is the weakest? (HINT: these particles can be stopped by your shirt)

• Alpha

• Beta

• Gamma

• Fission

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NGSS.HS-PS1-8

Thorium undergoes nuclear decay by the following equation. Complete the equation.

• 
• 
• 

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Neptunium undergoes nuclear decay by the following equation. Complete the equation.

• 
• 
• 

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NGSS.HS-PS1-8

Write the equation for the following process:

The alpha decay of Radon-198

• 
• 
• 
• 

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NGSS.HS-PS1-8

A radioactive substance is going through nuclear decay. It has a half life of 22 days. If I start with 250 grams of this substance, how much is left after 88 days?

• 31.3 g

• 15.6 g

• 62.5 g

• 125 g

Tags

NGSS.HS-PS1-8