Lesson Worksheet: Radioactivity Chemistry

In this worksheet, we will practice explaining the concept of radioactivity.

Q1:

Which of the following is not a reason why large amounts of ionizing radiation may be harmful to living organisms?

  • AIonizing radiation may inhibit cellular mitosis.
  • BIonizing radiation may reduce the intracellular temperature.
  • CIonizing radiation may trigger cellular apoptosis.
  • DIonizing radiation may have enough energy to break chemical bonds.
  • EIonizing radiation may affect the genetic information carried in cellular DNA.

Q2:

The following questions relate to the ability of different types of ionizing radiation to penetrate various substances.

Which type of ionizing radiation is able to pass through aluminum but is stopped by large quantities of concrete or several centimeters of lead?

  • A𝛽 particles
  • B𝛼 particles
  • C𝛾 rays

Which type of ionizing radiation is able to pass through paper but is stopped by aluminum sheeting?

  • A𝛽 particles
  • B𝛼 particles
  • C𝛾 rays

Which type of ionizing radiation could be stopped by a human hand?

  • A𝛽 particles
  • B𝛼 particles
  • C𝛾 rays

Q3:

Which of the following statements about the deflection of a stream of ionized radiation containing 𝛼 particles, 𝛽 particles, and 𝛾 rays in a magnetic field is true?

  • A𝛼 particles and 𝛽 particles are deflected in the same direction.
  • B𝛽 particles are not deflected by an electric field.
  • C𝛼 particles are only deflected by a small amount compared to 𝛽 particles.
  • D𝛽 particles can be deflected back toward the emitter.
  • E𝛾 rays are deflected in the same direction as 𝛽 particles.

Q4:

In general terms, why does nonionizing radiation not cause permanent damage to living cells?

  • ANonionizing radiation passes straight through living organisms.
  • BNonionizing radiation only travels short distances.
  • CNonionizing radiation does not have enough energy to damage cells.
  • DNonionizing radiation cannot penetrate living cells.
  • ECell exposure to nonionizing radiation is minimal.

Q5:

Which of the following is an example of ionizing radiation?

  • AIR rays
  • BCosmic rays
  • CLight rays
  • DMicrowaves
  • ERadio waves

Q6:

Identify the incorrect statement relating to deflections in an electric field of a stream of ionized radiation containing 𝛼 particles, 𝛽 particles, and 𝛾 rays.

  • A𝛽 particles are deflected less than 𝛼 particles.
  • BAn electric field creates a large deflection in the stream of 𝛽 particles.
  • C𝛼 particles are deflected in the opposite direction to 𝛽 particles.
  • D𝛾 rays are not deflected by an electric field.
  • EThe streams of 𝛼 particles and 𝛽 particles are separated.

Q7:

Nuclide notation is used to represent different types of ionizing radiation. Which type of ionizing radiation is represented by the nuclide notation 42He?

  • AGamma rays
  • BBeta particles
  • CX-rays
  • DAlpha particles

Q8:

Ionizing radiation has many practical applications. In which of the following devices or processes is ionizing radiation not used?

  • ASmoke detectors
  • BMedical imaging
  • CRadars
  • DDisinfecting medical instruments
  • EFood irradiation

Q9:

Greek letters are used to represent different types of ionizing radiation. Which type of ionizing radiation is represented by 𝛼?

  • AX-rays
  • BBeta particles
  • CGamma rays
  • DAlpha particles

Q10:

Which of the following is the correct descending order of different types of radiation according to their penetration power?

  • AGamma rays, neutron particles, beta particles, alpha particles
  • BGamma rays, beta particles, neutron particles, alpha particles
  • CAlpha particles, beta particles, neutron particles, gamma rays
  • DGamma rays, beta particles, alpha particles, neutron particles
  • EAlpha particles, neutron particles, beta particles, gamma rays

This lesson includes 16 additional questions and 6 additional question variations for subscribers.

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