Nuclear Decay

Alpha particles.....

• a) are positively charged.
• b) consist of two protons and four neutrons.
• c) can penetrate any thickness of matter
• d) All of the above 

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NGSS.HS-PS1-8

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

• nuclear decay
• nuclear mass
• isotopes
• radon

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NGSS.HS-PS1-8

During beta decay, a nucleus .... 

• gives up two protons and two neutrons.
•   maintains the same number of protons and neutrons.
•   loses a proton and gains a neutron.
• gains a proton and loses a neutron. 

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NGSS.HS-PS1-8

Radioactive materials have unstable...

• electrons
• protons
• nuclei
• neutrons

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NGSS.HS-PS1-8

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

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

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NGSS.HS-PS1-8

During ________________, unstable elements are transformed into more stable elements.

• mutation
• germination
• pollination
• radioactive decay

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NGSS.HS-PS1-8

An alpha particle is a _____________ nucleus.

• H (hydrogen)
• He (helium)
• U (uranium)
• Na (sodium)

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NGSS.HS-PS1-8

This radioactive particle is also known as an electron and has a charge of -1

• alpha
• beta
• gamma
• kryptonite

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NGSS.HS-PS1-8

With respect to penetrating power, a gamma particle is considered the _________________ form of radiation and lead or concrete incompletely block this type of radiation.

• weakest
• strongest
• somewhat strongest
• all radioactive particles are equally powerful

What type of radioactive decay increases the atomic number of a radioactive atom?    

•  gamma emission
•  beta emission
•  alpha emission 
•  fusion

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NGSS.HS-PS1-8