Radioactivity

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

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

What type of radioactive decay is shown here?

• Alpha decay
• Beta decay
• Gamma decay

Which type of radiation releases an electron?

• Alpha radiation
• Beta radiation
• gamma radiation

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

• Alpha radiation
• Beta radiation
• gamma radiation

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

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

Which process involves the splitting of large nuclei?

• 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

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 is the mass number of this isotope?

• 131

• 53

• 184

• 78

Which type of nuclear decay did Radon-198 go through?

• alpha decay

• beta decay

• gamma decay