Unit 2 Radioactive Decay

When a nucleus undergoes nuclear decay by gamma rays, the atomic number of the element....

• remains the same
•   decreases by one.
• increases by one.
• increases by two.

Tags

NGSS.HS-PS1-8

A helium nucleus with two protons and two neutrons is called a(n) ____.  

• alpha particle
• electroscope
• beta particle
• gamma ray

Tags

NGSS.HS-PS1-8

Negatively charged particles emitted from a nucleus at a high speed are ____.  

• alpha particle
• gamma rays
• beta particles
• X rays

Tags

NGSS.HS-PS1-8

 For the following nuclear reaction, what was the starting substance (X)?
      X  →   ₈₆Rn²²² + ₂He⁴ 

• Radium-222
• Radon-222
• Radon-226
• Radium-226

Tags

NGSS.HS-PS1-8

Complete the following reaction and choose the type of decay.

_54Xe¹¹⁸ → X + ₅₅Cs¹¹⁸

• alpha emission
• neutron activation
• beta emission
• gamma emission

Tags

NGSS.HS-PS1-8

What element does carbon-14 become after undergoing beta decay?
 

•  ₇N¹³ 
• ₅B¹⁴
• ₇N¹⁴ 
• ₆C¹⁴ 

Tags

NGSS.HS-PS1-8

Which particle contains the most mass?

• positron

• alpha

• beta

• gamma

Tags

NGSS.HS-PS1-8

What is the daughter product when Radium-226 undergoes alpha decay? (use proper isotope notation in your answer)

(a)  

Tags

NGSS.HS-PS1-8

What is the daughter product when Poladium-214 undergoes alpha decay? (use proper isotope notation)

(a)  

Tags

NGSS.HS-PS1-8

What is the daughter product when Calsium-47 undergoes beta decay? (use proper isotope notation)

(a)  

Tags

NGSS.HS-PS1-8