Nuclear Chemistry Test Review

An unstable nucleus ___________.

 

• emits energy when it decays

• increases its nuclear mass through fission

• expels all of its neutrons

• increases its half-life

Tags

NGSS.HS-PS1-8

What does the 238 represent in plutonium-238?

 

• the mass number

• the number of neutrons

• the atomic number

Tags

NGSS.HS-PS1-8

NGSS.HS-PS1-4

What is the charge on a gamma ray?

 

• 0

• -1

• +1

• +2

What particle is emitted in an alpha decay?

 

• proton 

• electron

• helium nucleus

• photon

Tags

NGSS.HS-PS1-8

A beta particle is a(n) _____

 

• neutron

• electron     

• photon

• helium nucleus

What is the least penetrating form of radiation?

 

• beta radiation

• alpha radiation

• gamma rays

What happens in a chain reaction?

 

• Reactants that have two parts split.

• Reactants are also released as products, and can start a new reaction.

• Radioactive products are lost.

• Radioactive reactants are absorbed by control rods.

Tags

NGSS.HS-PS1-8

Controlled nuclear chain reactions __________.

 

• take place in nuclear reactors.

• are always fusion reactions.

• are the reactions of atomic bombs.

• do not produce radioactive products.

Tags

NGSS.HS-PS1-8

A reaction in which small nuclei combine to form a heavier nucleus is called _________.

 

• fission

• a chemical reaction

• beta decay 

• fusion

Tags

NGSS.HS-PS1-8

What type of reaction provides the energy of the sun?

 

• alpha decay

• beta decay  

• fusion

• fission

Tags

NGSS.HS-PS1-8

NGSS.HS-ESS1-1