Alpha and Beta Decay

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

Has a mass of 4 and a charge of +2

• Alpha
• Beta
• Gamma

This is the symbol for a(n)

• alpha particle
• beta particle
• gamma particle

The splitting of a nucleus into smaller nuclei is

• fusion
• fission
• half-life
• gamma radiation

Tags

NGSS.HS-PS1-8

Which type of nuclear radiation is being emitted here?

• alpha
• beta
• gamma
• none

Tags

NGSS.HS-PS1-8

What particle completes this reaction?

• alpha particle
• beta particle
• gamma particle
• neutron

Tags

NGSS.HS-PS1-8

The atomic number of Actinium (Ac) is _____.

• 88

• 228

• 89

• 227

In beta-plus decay...

• the mass number decreases by 1

• the mass number increases by 1

• the atomic number decreases by 1

• the atomic number increases by 1

Tags

NGSS.HS-PS1-8

In beta-minus decay, a proton changes to a neutron and an electron.

• True

• False

Tags

NGSS.HS-PS1-8

What is the relative charge of a positron?

• -1

• 0

• 1

• 2