Radioactivity

What is the mass number of this isotope?

• 131

• 53

• 184

• 78

Tags

NGSS.HS-PS1-8

What is the atomic number of this isotope?

• 131

• 53

• 184

• 78

How many protons does this isotope have?

• 131

• 53

• 184

• 78

How many neutrons does this isotope have?

• 131

• 53

• 184

• 78

What is the name of this isotope?

• Iodine-131

• Iodine-53

• Iodine-184

• Iodine-78

Tags

NGSS.HS-PS1-8

An alpha particle is made up of

• 2 protons and 4 neutrons

• 1 proton and 1 neutron

• 2 protons and 2 neutrons

• 4 protons and 2 neutrons

Which type of nuclear radiation can be stopped by a sheet of paper?

• Alpha

• Beta

• Gamma

Tags

NGSS.HS-PS1-8

Which type of nuclear radiation can be stopped 60 cm of aluminum or 7 cm of lead?

• Alpha

• Beta

• Gamma

When a substance undergoes beta decay

• The atomic number increases by 1

• The atomic number decreases by 2

• The atomic number does not change

Tags

NGSS.HS-PS1-8

A radioactive shoe is wrapped in 3mm of aluminum foil but radiation is still detected. What must be true?

• The shoe emits alpha radiation

• The shoe emits beta radiation

• The shoe emits gamma radiation