Chem: Nuclear Energy

A radioactive atom has a ____ stable nucleus than a non-radioactive nucleus of the same element.

• more

• less

• identical

• small

What makes something radioactive?

• elements with an atomic number above 81
• an unstable nucleus
• contaminated sewage
• It decays over time

Tags

NGSS.HS-PS1-8

_______________ is the process by which unstable atoms emit radiation until they become stable.

• Radiation
• Chemical Reaction
• Radioactive Decay
• Isotopes

Tags

NGSS.HS-PS1-8

In order of most to least penetrating radiation we have

• Alpha , Beta,  Gamma
• Beta , Gamma , Alpha
• Gamma, Beta, Alpha
• Gamma, Alpha, Beta

Tags

NGSS.HS-PS1-8

Which type of radiation releases an electron?

• Alpha radiation

• Beta radiation

• Gamma radiation

• Theta radiation

What particle is released when an unstable isotope undergoes alpha radiation?

• a helium nucleus

• an electron

• a photon of light

• a neutron

Tags

NGSS.HS-PS1-8

Which process involves the splitting of a large nucleus?

• alpha decay

• nuclear fusion

• beta decay

• nuclear fission

What type of nuclear reaction occurs in the Sun?

• Nuclear fission
• beta decay
• alpha decay
• Nuclear fusion

Tags

NGSS.HS-PS1-8

NGSS.HS-ESS1-1

When nuclei decay, massive amounts of __________ is released.

• energy

• electrons

• protons

• neutrons

Tags

NGSS.HS-PS1-8

What is the symbol for an alpha particle?

• ⁴₂He
• ⁰_-1e
• ⁰₊₁ e
• ¹₀n

Tags

NGSS.HS-PS1-8