Nuclear Chemistry

_____is the joining of atomic nuclei

• Fusion

• chain reaction

• Photosynthesis

• Fission

Tags

NGSS.HS-PS1-8

_______is the splitting of atomic nuclei

• Fission

• nuclear reaction

• Fusion

• bayler reaction

Tags

NGSS.HS-PS1-8

Has the highest penetrating power.  Can penetrate our body.  Even several cm thick of lead or several meters thick of concrete cannot stop all of it.

• Alpha
• Beta
• Gamma

Has the lowest penetrating power.  Can only penetrate 0.05 mm into the body and can be stopped by the skin.

• Alpha
• Beta
• Gamma
• Electron capture

Radioactive materials have unstable...

• electrons
• protons
• nuclei
• neutrons

Tags

NGSS.HS-PS1-8

What is the half-life of iodine-131?

• 32 days
• 8 days
• 16 days
• 24 days

Tags

NGSS.HS-PS1-8

What is Half-life?

• The amount of time it takes for some of the nuclei in a sample of the isotope to decay
• The amount of time it takes for half the electrons in a sample of the isotope to decay
• The amount of time it takes for half the nuclei in a sample of the isotope to decay
• the amount of time it takes to double the nuclei in a sample of the isotope to decay

Tags

NGSS.HS-PS1-8

A beta particle is also called _____.

• an isotope

• a mass number

• an electron

• a fusion

What term is used to describe an atom that changes into another element because of radioactive decay?

• gamma ray

• transmutation

• alpha particle

• electron

Tags

NGSS.HS-PS1-8

Which nuclear process if shown in the picture?

• alpha decay

• beta decay

• fusion

• fission

Tags

NGSS.HS-PS1-8