What is Radioactivity

An isotope of an element has the same number of _________, but a different number of _________.

• Protons, electrons
• Protons, neutrons
• Electrons, neutrons

Tags

NGSS.HS-PS1-8

What type of radioactive decay is shown here?

• Alpha decay
• Beta decay
• Gamma decay

Tags

NGSS.HS-PS1-8

Which type of radiation releases an electron?

• Alpha radiation
• Beta radiation
• gamma radiation

Tags

NGSS.HS-PS1-8

What type of radiation can be stopped by clothing or a piece of paper?

• Alpha radiation
• Beta radiation
• gamma radiation

Tags

NGSS.HS-PS1-8

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

• an helium nucleus
• an electron
• a photon of light

Tags

NGSS.HS-PS1-8

Which is NOT a characteristic of gamma radiation?

• High energized photon of light
• Can be stopped by a sheet of aluminum foil
• Is the most harmful type of radiation to humans
• Our use of protection is concrete, or several inches of lead

What type of decay is shown here

• alpha decay
• beta decay
• gamma decay

Tags

NGSS.HS-PS1-8

What is the mass number of this isotope?

• 131

• 53

• 184

• 78

What is the atomic number of this isotope?

• 131

• 53

• 184

• 78

How many protons does this isotope have?

• 131

• 53

• 184

• 78