Which particles make up the nucleus of an atom?

• protons and neutrons
• electrons and protons
• electrons, protons, and neutrons
• electrons and neutrons

Tags

NGSS.HS-PS1-8

What is the number of protons that the element in this image contain?

• 14

• 7

• 21

When two nuclei join to form one nucleus, there is a slight decrease in mass and the release of a large amount of energy. What is this process called?

• Fission

• Fusion

• Conversion

• Radioactive Decay

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 type of radiation releases an electron?

• Alpha radiation

• Beta radiation

• Gamma radiation

• Theta radiation

Finish the following alpha decay reaction:

• 
• 
• 

Complete the following beta decay reaction:

• 
• 
• 

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

Name the type of radioactive particle that can be stopped by a sheet of paper.

• alpha
• beta
• gamma
• lambda

Tags

NGSS.HS-PS1-8

What is the half-life of iodine-131?

• 32 days

• 8 days

• 16 days

• 24 days